{"id":1120,"date":"2015-11-05T02:00:45","date_gmt":"2015-11-05T07:00:45","guid":{"rendered":"http:\/\/www.bhargavs.com\/?p=1120"},"modified":"2015-11-05T02:00:45","modified_gmt":"2015-11-05T07:00:45","slug":"mac-mail-not-connecting-to-exchange-server-part-2","status":"publish","type":"post","link":"https:\/\/bhargavs.com\/index.php\/2015\/11\/05\/mac-mail-not-connecting-to-exchange-server-part-2\/","title":{"rendered":"Mac Mail not connecting to Exchange Server – Part 2"},"content":{"rendered":"

In Part 1<\/a> of this article, we discussed symptoms of Mac Mail unable to connect to Exchange 2016 servers through KEMP LoadMaster load balancers. We also discussed troubleshooting steps that addressed the issue of ExRCA.com unable to pass EWS tests, however, we stopped there since Mac Mail failed to connect despite ExRCA EWS tests passed.<\/p>\n

Let\u2019s see what we can do to get the Mac Mail to connect successfully to Exchange servers.<\/p>\n

Since we addressed the 100-continue handling in Part 1<\/a> of this article, ExRCA tests did not indicate any more issues. Microsoft Outlook for Mac did not have issue connecting to Exchange even before we changed 100-continue handling to be RFC-7231 compliant.<\/p>\n

At this point, I decided to look at the network trace. Looking at the trace captured using Wireshark on the client machine, I noticed the following HTTP dialog:<\/p>\n

POST \/ews\/exchange.asmx <-> 401 Unauthorized <-> POST \/ews\/exchange.asmx <-> 200 OK<\/p>\n

POST \/ews\/exchange.asmx <-> 401 Unauthorized <-> POST \/ews\/exchange.asmx <-> 401 Unauthorized <-> POST \/ews\/exchange.asmx <-> 400 Bad Request<\/p><\/blockquote>\n

Notice how initial dialog included challenge response for NTLM authentication and ended with 200 OK. At this point Mac Mail client started with another POST operation to EWS. However, this time the pattern followed multiple 401 responses from server and ended with 400.<\/p>\n

When comparing that with Outlook for Mac, the pattern looked like the following:<\/p>\n

POST \/ews\/exchange.asmx <-> 401 Unauthorized <-> POST \/ews\/exchange.asmx <-> 401 Unauthorized <-> POST \/ews\/exchange.asmx <-> 200 OK<\/p><\/blockquote>\n

Notice how the pattern looks similar to Mac Mail\u2019s second POST request, however, it ends with 200 OK. The response included data that was requested by POST operation.<\/p>\n

I needed to correlate this with the data being received on the Exchange server. Due to newer ciphers which use PFS (Perfect Forward Secrecy) I couldn\u2019t decrypt data being received from load balancer by the server despite having the private key used to encrypt the information. I was able to decrypt client side traffic due to load balancer configuration of ciphers that didn\u2019t use PFS. I don\u2019t recommend this configuration in production and KEMP LoadMaster default setup uses more secure ciphers. I had it configured this way only for troubleshooting purpose in my lab and no production data was in flight during testing.<\/p>\n

I was now facing the issue of capturing the headers from the server side. One way to address this is to configure list of ciphers used by server similar to what I had done on KEMP LoadMaster. However, in my test that did not work for some reason. I decided to use failed request tracing in IIS (big thanks to my Microsoft colleague Brad Hughes for the hint). Here\u2019s how to set it up:<\/p>\n

– Using IIS Manager, select the \u201cDefault Web Site\u201d and select \u201cFailed Request Tracing Rules\u201d<\/p>\n

– Create a new rule and select \u201cAll Contents\u201d in the \u201cSpecify Content to Trace\u201d dialog<\/p>\n

– In \u201cTrace Conditions\u201d dialog, select \u201cStatus Code(s)\u201d and type 400<\/p>\n

– Accept the default selection for trace providers and click finish<\/p>\n

– Click \u201cEdit Site Tracing\u201d option under Actions and click \u201cEnable\u201d<\/p>\n

– Change trace location or accept default and click \u201cOK\u201d<\/p>\n

Now that the trace is enabled and rule configured to capture HTTP 400 error condition, I launched Mac Mail client and reproduced the issue. When the error occurred, numerous xml files were created by IIS. Here\u2019s the most relevant piece of data from the trace file (I have removed unnecessary headers for brevity):<\/p>\n

Via: HTTPS\/1.1 load.balancer.ip.address:443
\nAuthorization: NTLM<\/p>\n

Cookie: X-BackEndCookie=S-1-5-21-\u2026;<\/p>\n

ClientId=GALCMQFEEUEGNHCEWFGEVQ; exchangecookie=196574d09f7f419897032917045ee4fb
\nHost: mail.contoso.com
\nUser-Agent: Mac OS X\/10.11.1 (15B42); ExchangeWebServices\/6.0 (242); Mail\/9.1 (3096.5)
\nX-ClientSide: client.ip.address:49792 -&gt; load.balancer.ip.address:443<\/p><\/blockquote>\n

While the headers gives you idea of what is included in a normal POST request from the client, for me, the first and last headers\u00a0are very important. The \u201cVia\u201d header indicates presence of a proxy between client and server. In this case it indicates the IP address of the load balancer. The X-ClientSide (or X-Forwarded-For) header is used by proxies and load balancers to preserve original client IP address when SNAT is in use. SNAT is recommended when load balancing Exchange servers. KEMP LoadMaster uses X-ClientSide header by default.<\/p>\n

When I saw these headers, I remembered the discussion I had with my talented support engineers at KEMP. At some point in our discussions, someone had mentioned that inserting \u201cVia\u201d headers are known to negatively impact Mac Mail client.<\/p>\n

I also found an old reference on our knowledge base which provided some more details on the issue: https:\/\/support.kemptechnologies.com\/hc\/en-us\/articles\/200503159-Exchange-2010-LoadMaster-and-OS-X-mail-issues<\/a><\/p>\n

The issue stems from how Exchange server responds to the EWS request when \u201cVia\u201d headers are present and how different clients respond to it. When \u201cVia\u201d header is added by the load balancer, Exchange server sets value of Persistent-Auth header to \u201cfalse\u201d, indicating that client must reauthenticate when sending another EWS request:<\/p>\n

\"image\"<\/a><\/p>\n

This seems to be a protective mechanism to prevent man in the middle attacks.<\/p>\n

When \u201cVia\u201d header is not present, Exchange server sets the value of Persistent-Auth to \u201ctrue\u201d, indicating that client doesn\u2019t need to include authorization information in another EWS request. Client will need to reauthenticate eventually when authentication expires:<\/p>\n

\"image\"<\/a><\/p>\n

Outlook for Mac handles\u00a0these responses as expected, including authentication information when Persistent-Auth is set to false by Exchange server. Which explains why Outlook worked even when \u201cVia\u201d headers were present.<\/p>\n

Mac\u2019s Mail client, however, seems to have its own ways. It authenticates intially, but after first \u201c200 OK\u201d response from Exchange server, which also indicates Persistent-Auth is set to false, Mail client follows up with another EWS request without including required authentication information. This results in dreaded \u201c400 Bad Request\u201d error from the Exchange Server.<\/p>\n

Now the fix, if you ask me, should be to ask Apple to fix the behavior of their Mail client. But I won\u2019t hold my breath for that to happen. Instead, I set \u201cAdditional L7 Header\u201d from default value of \u201cX-ClientSide\u201d to \u201cNone\u201d:<\/p>\n

\"image\"<\/a><\/p>\n

This stops the KEMP LoadMaster from inserting \u201cVia\u201d header in the HTTP stream to the Exchange Servers. Exchange servers respond accordingly, setting Persistent-Auth to \u201ctrue\u201d. While it\u2019s the Mac\u2019s built-in Mail client that is behaving badly, it seems the load balancer is at fault because changing something on load balancer fixed the issue.<\/p>\n

Is it? You be the judge! \"Smile\"<\/p>\n","protected":false},"excerpt":{"rendered":"

In Part 1 of this article, we discussed symptoms of Mac Mail unable to connect to Exchange 2016 servers through KEMP LoadMaster load balancers. We also discussed troubleshooting steps that […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"pgc_sgb_lightbox_settings":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[55],"tags":[67,70,119,123,124,128,152,153,162],"class_list":["post-1120","post","type-post","status-publish","format-standard","hentry","category-exchange-2016","tag-400-bad-request","tag-501-not-implemented","tag-ews","tag-exchange-2013","tag-exchange-2016","tag-exchange-web-services","tag-load-balancer","tag-loadmaster","tag-mac-mail"],"yoast_head":"\nMac Mail not connecting to Exchange Server - Part 2 - Bhargav's IT Playground<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/bhargavs.com\/index.php\/2015\/11\/05\/mac-mail-not-connecting-to-exchange-server-part-2\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Mac Mail not connecting to Exchange Server - Part 2 - Bhargav's IT Playground\" \/>\n<meta property=\"og:description\" content=\"In Part 1 of this article, we discussed symptoms of Mac Mail unable to connect to Exchange 2016 servers through KEMP LoadMaster load balancers. We also discussed troubleshooting steps that […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/bhargavs.com\/index.php\/2015\/11\/05\/mac-mail-not-connecting-to-exchange-server-part-2\/\" \/>\n<meta property=\"og:site_name\" content=\"Bhargav's IT Playground\" \/>\n<meta property=\"article:published_time\" content=\"2015-11-05T07:00:45+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/bhargavs.com\/wp-content\/uploads\/2015\/11\/image_thumb3.png\" \/>\n<meta name=\"author\" content=\"Bhargav\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Bhargav\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/bhargavs.com\\\/index.php\\\/2015\\\/11\\\/05\\\/mac-mail-not-connecting-to-exchange-server-part-2\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/bhargavs.com\\\/index.php\\\/2015\\\/11\\\/05\\\/mac-mail-not-connecting-to-exchange-server-part-2\\\/\"},\"author\":{\"name\":\"Bhargav\",\"@id\":\"https:\\\/\\\/bhargavs.com\\\/#\\\/schema\\\/person\\\/28f6d8c9b29f3a879483d65fc2ab5e26\"},\"headline\":\"Mac Mail not connecting to Exchange Server – Part 2\",\"datePublished\":\"2015-11-05T07:00:45+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/bhargavs.com\\\/index.php\\\/2015\\\/11\\\/05\\\/mac-mail-not-connecting-to-exchange-server-part-2\\\/\"},\"wordCount\":1112,\"commentCount\":2,\"publisher\":{\"@id\":\"https:\\\/\\\/bhargavs.com\\\/#\\\/schema\\\/person\\\/28f6d8c9b29f3a879483d65fc2ab5e26\"},\"image\":{\"@id\":\"https:\\\/\\\/bhargavs.com\\\/index.php\\\/2015\\\/11\\\/05\\\/mac-mail-not-connecting-to-exchange-server-part-2\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/bhargavs.com\\\/wp-content\\\/uploads\\\/2015\\\/11\\\/image_thumb3.png\",\"keywords\":[\"400 Bad Request\",\"501 not implemented\",\"EWS\",\"Exchange 2013\",\"Exchange 2016\",\"Exchange Web Services\",\"Load Balancer\",\"LoadMaster\",\"Mac Mail\"],\"articleSection\":[\"Exchange 2016\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/bhargavs.com\\\/index.php\\\/2015\\\/11\\\/05\\\/mac-mail-not-connecting-to-exchange-server-part-2\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/bhargavs.com\\\/index.php\\\/2015\\\/11\\\/05\\\/mac-mail-not-connecting-to-exchange-server-part-2\\\/\",\"url\":\"https:\\\/\\\/bhargavs.com\\\/index.php\\\/2015\\\/11\\\/05\\\/mac-mail-not-connecting-to-exchange-server-part-2\\\/\",\"name\":\"Mac Mail not connecting to Exchange Server - Part 2 - Bhargav's IT Playground\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/bhargavs.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/bhargavs.com\\\/index.php\\\/2015\\\/11\\\/05\\\/mac-mail-not-connecting-to-exchange-server-part-2\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/bhargavs.com\\\/index.php\\\/2015\\\/11\\\/05\\\/mac-mail-not-connecting-to-exchange-server-part-2\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/bhargavs.com\\\/wp-content\\\/uploads\\\/2015\\\/11\\\/image_thumb3.png\",\"datePublished\":\"2015-11-05T07:00:45+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/bhargavs.com\\\/index.php\\\/2015\\\/11\\\/05\\\/mac-mail-not-connecting-to-exchange-server-part-2\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/bhargavs.com\\\/index.php\\\/2015\\\/11\\\/05\\\/mac-mail-not-connecting-to-exchange-server-part-2\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/bhargavs.com\\\/index.php\\\/2015\\\/11\\\/05\\\/mac-mail-not-connecting-to-exchange-server-part-2\\\/#primaryimage\",\"url\":\"https:\\\/\\\/bhargavs.com\\\/wp-content\\\/uploads\\\/2015\\\/11\\\/image_thumb3.png\",\"contentUrl\":\"https:\\\/\\\/bhargavs.com\\\/wp-content\\\/uploads\\\/2015\\\/11\\\/image_thumb3.png\",\"width\":244,\"height\":187},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/bhargavs.com\\\/index.php\\\/2015\\\/11\\\/05\\\/mac-mail-not-connecting-to-exchange-server-part-2\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/bhargavs.com\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Mac Mail not connecting to Exchange Server – Part 2\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/bhargavs.com\\\/#website\",\"url\":\"https:\\\/\\\/bhargavs.com\\\/\",\"name\":\"Bhargav's IT Playground\",\"description\":\"Passion for Technology. Power of Collaboration.\",\"publisher\":{\"@id\":\"https:\\\/\\\/bhargavs.com\\\/#\\\/schema\\\/person\\\/28f6d8c9b29f3a879483d65fc2ab5e26\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/bhargavs.com\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":[\"Person\",\"Organization\"],\"@id\":\"https:\\\/\\\/bhargavs.com\\\/#\\\/schema\\\/person\\\/28f6d8c9b29f3a879483d65fc2ab5e26\",\"name\":\"Bhargav\",\"logo\":{\"@id\":\"https:\\\/\\\/bhargavs.com\\\/#\\\/schema\\\/person\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/bhargavs.com\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Mac Mail not connecting to Exchange Server - Part 2 - Bhargav's IT Playground","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/bhargavs.com\/index.php\/2015\/11\/05\/mac-mail-not-connecting-to-exchange-server-part-2\/","og_locale":"en_US","og_type":"article","og_title":"Mac Mail not connecting to Exchange Server - Part 2 - Bhargav's IT Playground","og_description":"In Part 1 of this article, we discussed symptoms of Mac Mail unable to connect to Exchange 2016 servers through KEMP LoadMaster load balancers. We also discussed troubleshooting steps that […]","og_url":"https:\/\/bhargavs.com\/index.php\/2015\/11\/05\/mac-mail-not-connecting-to-exchange-server-part-2\/","og_site_name":"Bhargav's IT Playground","article_published_time":"2015-11-05T07:00:45+00:00","og_image":[{"url":"https:\/\/bhargavs.com\/wp-content\/uploads\/2015\/11\/image_thumb3.png","type":"","width":"","height":""}],"author":"Bhargav","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Bhargav","Est. reading time":"6 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/bhargavs.com\/index.php\/2015\/11\/05\/mac-mail-not-connecting-to-exchange-server-part-2\/#article","isPartOf":{"@id":"https:\/\/bhargavs.com\/index.php\/2015\/11\/05\/mac-mail-not-connecting-to-exchange-server-part-2\/"},"author":{"name":"Bhargav","@id":"https:\/\/bhargavs.com\/#\/schema\/person\/28f6d8c9b29f3a879483d65fc2ab5e26"},"headline":"Mac Mail not connecting to Exchange Server – Part 2","datePublished":"2015-11-05T07:00:45+00:00","mainEntityOfPage":{"@id":"https:\/\/bhargavs.com\/index.php\/2015\/11\/05\/mac-mail-not-connecting-to-exchange-server-part-2\/"},"wordCount":1112,"commentCount":2,"publisher":{"@id":"https:\/\/bhargavs.com\/#\/schema\/person\/28f6d8c9b29f3a879483d65fc2ab5e26"},"image":{"@id":"https:\/\/bhargavs.com\/index.php\/2015\/11\/05\/mac-mail-not-connecting-to-exchange-server-part-2\/#primaryimage"},"thumbnailUrl":"https:\/\/bhargavs.com\/wp-content\/uploads\/2015\/11\/image_thumb3.png","keywords":["400 Bad Request","501 not implemented","EWS","Exchange 2013","Exchange 2016","Exchange Web Services","Load Balancer","LoadMaster","Mac Mail"],"articleSection":["Exchange 2016"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/bhargavs.com\/index.php\/2015\/11\/05\/mac-mail-not-connecting-to-exchange-server-part-2\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/bhargavs.com\/index.php\/2015\/11\/05\/mac-mail-not-connecting-to-exchange-server-part-2\/","url":"https:\/\/bhargavs.com\/index.php\/2015\/11\/05\/mac-mail-not-connecting-to-exchange-server-part-2\/","name":"Mac Mail not connecting to Exchange Server - Part 2 - Bhargav's IT Playground","isPartOf":{"@id":"https:\/\/bhargavs.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/bhargavs.com\/index.php\/2015\/11\/05\/mac-mail-not-connecting-to-exchange-server-part-2\/#primaryimage"},"image":{"@id":"https:\/\/bhargavs.com\/index.php\/2015\/11\/05\/mac-mail-not-connecting-to-exchange-server-part-2\/#primaryimage"},"thumbnailUrl":"https:\/\/bhargavs.com\/wp-content\/uploads\/2015\/11\/image_thumb3.png","datePublished":"2015-11-05T07:00:45+00:00","breadcrumb":{"@id":"https:\/\/bhargavs.com\/index.php\/2015\/11\/05\/mac-mail-not-connecting-to-exchange-server-part-2\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/bhargavs.com\/index.php\/2015\/11\/05\/mac-mail-not-connecting-to-exchange-server-part-2\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/bhargavs.com\/index.php\/2015\/11\/05\/mac-mail-not-connecting-to-exchange-server-part-2\/#primaryimage","url":"https:\/\/bhargavs.com\/wp-content\/uploads\/2015\/11\/image_thumb3.png","contentUrl":"https:\/\/bhargavs.com\/wp-content\/uploads\/2015\/11\/image_thumb3.png","width":244,"height":187},{"@type":"BreadcrumbList","@id":"https:\/\/bhargavs.com\/index.php\/2015\/11\/05\/mac-mail-not-connecting-to-exchange-server-part-2\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/bhargavs.com\/"},{"@type":"ListItem","position":2,"name":"Mac Mail not connecting to Exchange Server – Part 2"}]},{"@type":"WebSite","@id":"https:\/\/bhargavs.com\/#website","url":"https:\/\/bhargavs.com\/","name":"Bhargav's IT Playground","description":"Passion for Technology. Power of Collaboration.","publisher":{"@id":"https:\/\/bhargavs.com\/#\/schema\/person\/28f6d8c9b29f3a879483d65fc2ab5e26"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/bhargavs.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":["Person","Organization"],"@id":"https:\/\/bhargavs.com\/#\/schema\/person\/28f6d8c9b29f3a879483d65fc2ab5e26","name":"Bhargav","logo":{"@id":"https:\/\/bhargavs.com\/#\/schema\/person\/image\/"},"sameAs":["https:\/\/bhargavs.com"]}]}},"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":1115,"url":"https:\/\/bhargavs.com\/index.php\/2015\/11\/04\/mac-mail-not-connecting-to-exchange-server-part-1\/","url_meta":{"origin":1120,"position":0},"title":"Mac Mail not connecting to Exchange Server – Part 1","author":"Bhargav","date":"November 4, 2015","format":false,"excerpt":"My good friend and renowned Exchange MVP Jeff Guillet (expta.com fame) brought an interesting issue to my attention. On his Mac, built-in Mail client would not connect to Exchange through KEMP LoadMaster. The load balancer was configured to user Layer 7 load balancing. The Exchange environment was mixed Exchange 2013\u2026","rel":"","context":"In "Exchange 2016"","block_context":{"text":"Exchange 2016","link":"https:\/\/bhargavs.com\/index.php\/category\/microsoft\/exchange-server\/exchange-2016\/"},"img":{"alt_text":"image","src":"https:\/\/i0.wp.com\/bhargavs.com\/wp-content\/uploads\/2015\/11\/image_thumb.png?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":1693,"url":"https:\/\/bhargavs.com\/index.php\/2013\/05\/08\/whats-new-in-loadmaster-release-7-0-4\/","url_meta":{"origin":1120,"position":1},"title":"What\u2019s new in LoadMaster release 7.0-4","author":"Bhargav","date":"May 8, 2013","format":false,"excerpt":"LoadMaster firmware 7.0-4 just became generally available from KEMP Technologies. For those who aren't aware, LoadMaster is load balancing and application delivery controller product from KEMP Technologies. I in particular am very excited about this release for a few reasons: Edge Security Pack: This firmware is first release of Edge\u2026","rel":"","context":"In "Load Balancing"","block_context":{"text":"Load Balancing","link":"https:\/\/bhargavs.com\/index.php\/category\/technology\/load-balancing\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1670,"url":"https:\/\/bhargavs.com\/index.php\/2011\/08\/22\/microsoft-exchange-2010-powershell-cookbook-review\/","url_meta":{"origin":1120,"position":2},"title":"Microsoft Exchange 2010 PowerShell Cookbook Review","author":"Bhargav","date":"August 22, 2011","format":false,"excerpt":"Disclaimer: I am not paid to write about this book and the review written here is my own view. I was recently contacted by Packt Publishing about their recently published book \u201cMicrosoft Exchange 2010 PowerShell Cookbook\u201d. I have voluntarily reviewed books in the past (i.e. Windows Server 2003 Security: A\u2026","rel":"","context":"In "Exchange 2010"","block_context":{"text":"Exchange 2010","link":"https:\/\/bhargavs.com\/index.php\/category\/microsoft\/exchange-server\/exchange-2010\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1641,"url":"https:\/\/bhargavs.com\/index.php\/2009\/12\/10\/blackberry-announced-exchange-2010-support-impact\/","url_meta":{"origin":1120,"position":3},"title":"BlackBerry announced Exchange 2010 support but what is the impact?","author":"Bhargav","date":"December 10, 2009","format":false,"excerpt":"MS Exchange Team blogged about BlackBerry Enterprise Server support for Exchange 2010 recently. It has been viral on social networks and many have been cheering about the news as their Exchange 2010 deployment or upgrade plans hinged on this to some degree. I was one of them. I was waiting\u2026","rel":"","context":"In "Exchange 2010"","block_context":{"text":"Exchange 2010","link":"https:\/\/bhargavs.com\/index.php\/category\/microsoft\/exchange-server\/exchange-2010\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":49,"url":"https:\/\/bhargavs.com\/index.php\/2009\/01\/27\/error-c10308a2-when-remotely-adding-e-mail-address-to-users-2\/","url_meta":{"origin":1120,"position":4},"title":"Error c10308a2 when remotely adding e-mail address to users","author":"Bhargav","date":"January 27, 2009","format":false,"excerpt":"We encountered an error today at my client site. When an administrator tried to add an e-mail address to mail-enabled user from their workstation using Active Directory Users and Computers, the encountered an error c10308a2. The error is documented in KB article 905809. My client was confused after looking at\u2026","rel":"","context":"In "Exchange 2003"","block_context":{"text":"Exchange 2003","link":"https:\/\/bhargavs.com\/index.php\/category\/microsoft\/exchange-server\/exchange-2003\/"},"img":{"alt_text":"error c10308a2","src":"https:\/\/i0.wp.com\/www.bhargavs.com\/wp-content\/uploads\/2008\/12\/clip-image002-thumb1.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":1626,"url":"https:\/\/bhargavs.com\/index.php\/2009\/05\/28\/exchange-2007-setup-error-domain-controller-override-set-registry\/","url_meta":{"origin":1120,"position":5},"title":"Exchange 2007 Setup Error: Setup Cannot use Domain Controller\u2026","author":"Bhargav","date":"May 28, 2009","format":false,"excerpt":"On one of my tests I was trying to add Hub role to a server that already had Mailbox role installed. When I started the setup, I got an error and pre-requisite check failed with error \u201cSetup cannot use domain controller 'dc1.mytest.int' because an override is set in the registry.\u201d\u2026","rel":"","context":"In "Exchange 2007"","block_context":{"text":"Exchange 2007","link":"https:\/\/bhargavs.com\/index.php\/category\/microsoft\/exchange-server\/exchange-2007\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"jetpack_shortlink":"https:\/\/wp.me\/pkROc-i4","_links":{"self":[{"href":"https:\/\/bhargavs.com\/index.php\/wp-json\/wp\/v2\/posts\/1120","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bhargavs.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bhargavs.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bhargavs.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/bhargavs.com\/index.php\/wp-json\/wp\/v2\/comments?post=1120"}],"version-history":[{"count":0,"href":"https:\/\/bhargavs.com\/index.php\/wp-json\/wp\/v2\/posts\/1120\/revisions"}],"wp:attachment":[{"href":"https:\/\/bhargavs.com\/index.php\/wp-json\/wp\/v2\/media?parent=1120"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bhargavs.com\/index.php\/wp-json\/wp\/v2\/categories?post=1120"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bhargavs.com\/index.php\/wp-json\/wp\/v2\/tags?post=1120"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}