Comments on: The Case of the Hub Transport Server Load Imbalance https://practical365.com/case-hub-transport-server-load-imbalance/ Practical Office 365 News, Tips, and Tutorials Fri, 29 Dec 2023 13:52:58 +0000 hourly 1 https://wordpress.org/?v=6.6.1 By: Kenneth https://practical365.com/case-hub-transport-server-load-imbalance/#comment-284646 Fri, 29 Dec 2023 13:52:58 +0000 https://www.practical365.com/?p=4651#comment-284646 In reply to Ben.

Ben, thank you for this comment.
I introduced a new mail server, mailflow works but I was breaking my head on why the mails I relayed for testing, kept always getting proxied to one old mailserver despite there not being any relay configured for it, or such. Documentation on mail routing did not make me much wiser. Until i saw your post and moved the system mailboxes to the new server and now it moves via the new server.
At least now I understand

]]> By: Ben https://practical365.com/case-hub-transport-server-load-imbalance/#comment-193924 Fri, 08 Mar 2019 14:53:30 +0000 https://www.practical365.com/?p=4651#comment-193924 Just in case others have the same issue, we were experiencing this behavior, for some boxes used purely for SMTP relay – the issue turned out to be that when there is no mailbox present in the org for the user who has authenticated. The SMTP session gets proxied to the mailbox server hosting the database containing SystemMailbox{bb558c35-97f1-4cb9-8ff7-d53741dc928c} – therefore in our scenario one server was handling 90% of the traffic due to the SMTP service accounts being used not having a local mailbox.

]]> By: <div class="apbct-real-user-wrapper"> <div class="apbct-real-user-author-name">Paul Cunningham</div> <div class="apbct-real-user-badge" onmouseover=" let popup = document.getElementById('apbct_trp_comment_id_12739'); popup.style.display = 'inline-flex'; "> <div class="apbct-real-user-popup" id="apbct_trp_comment_id_12739"> <div class="apbct-real-user-title"> <p class="apbct-real-user-popup-header">The Real Person!</p> <p class="apbct-real-user-popup-text">Author <b>Paul Cunningham</b> acts as a real person and passed all tests against spambots. Anti-Spam by CleanTalk.</p> </div> </div> </div> </div> https://practical365.com/case-hub-transport-server-load-imbalance/#comment-12739 Fri, 14 Mar 2014 01:05:21 +0000 https://www.practical365.com/?p=4651#comment-12739 In reply to Akhil.

That really has nothing to do with this article. If you do some Google searches for that error there are a lot of examples of how to fix it.

]]> By: Akhil https://practical365.com/case-hub-transport-server-load-imbalance/#comment-12738 Thu, 13 Mar 2014 19:36:32 +0000 https://www.practical365.com/?p=4651#comment-12738 One more query, we are facing one error where Mapi session increase, due to that outlook disconnect automatically.

Error – 9646

Mapi session “fdff865f-a9f3-4ca3-a7ac-7df66f705517: /o=IFF/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Recipients/cn=mxk4094tcs695” exceeded the maximum of 500 objects of type “objtFolderView”.

The Microsoft Exchange Information Store service terminated unexpectedly. It has done this 1 time(s). The following corrective action will be taken in 5000 milliseconds: Restart the service.

]]> By: Akhil https://practical365.com/case-hub-transport-server-load-imbalance/#comment-12737 Thu, 13 Mar 2014 19:32:39 +0000 https://www.practical365.com/?p=4651#comment-12737 So , finally we got it.

Could u share your email with me for my other concern, f possible
Regards,

Akhil Chopra

]]> By: <div class="apbct-real-user-wrapper"> <div class="apbct-real-user-author-name">Paul Cunningham</div> <div class="apbct-real-user-badge" onmouseover=" let popup = document.getElementById('apbct_trp_comment_id_12736'); popup.style.display = 'inline-flex'; "> <div class="apbct-real-user-popup" id="apbct_trp_comment_id_12736"> <div class="apbct-real-user-title"> <p class="apbct-real-user-popup-header">The Real Person!</p> <p class="apbct-real-user-popup-text">Author <b>Paul Cunningham</b> acts as a real person and passed all tests against spambots. Anti-Spam by CleanTalk.</p> </div> </div> </div> </div> https://practical365.com/case-hub-transport-server-load-imbalance/#comment-12736 Wed, 12 Mar 2014 10:48:20 +0000 https://www.practical365.com/?p=4651#comment-12736 In reply to Akhil.

I guess you mean this?

http://www.blankmanblog.com/general-news/tips-tricks/restricting-hub-transport-server-selection-using-submissionserveroverridelist/

]]> By: Akhil https://practical365.com/case-hub-transport-server-load-imbalance/#comment-12735 Wed, 12 Mar 2014 10:42:36 +0000 https://www.practical365.com/?p=4651#comment-12735 yes you are right it will cost to the company, But i know there is a command where we can separate hub server from other hub servers to take mail traffic.

Any ways thanks i will find out.

Regards,
Akhil Chopra

]]> By: <div class="apbct-real-user-wrapper"> <div class="apbct-real-user-author-name">Paul Cunningham</div> <div class="apbct-real-user-badge" onmouseover=" let popup = document.getElementById('apbct_trp_comment_id_12734'); popup.style.display = 'inline-flex'; "> <div class="apbct-real-user-popup" id="apbct_trp_comment_id_12734"> <div class="apbct-real-user-title"> <p class="apbct-real-user-popup-header">The Real Person!</p> <p class="apbct-real-user-popup-text">Author <b>Paul Cunningham</b> acts as a real person and passed all tests against spambots. Anti-Spam by CleanTalk.</p> </div> </div> </div> </div> https://practical365.com/case-hub-transport-server-load-imbalance/#comment-12734 Wed, 12 Mar 2014 10:28:36 +0000 https://www.practical365.com/?p=4651#comment-12734 In reply to Akhil.

No, an AD Site boundary is defined by IP subnets. The AD Site can be physically located wherever you want it to be, you simply need to define it separately in AD Sites & Services, because Exchange uses AD Sites as its routing topology.

If you absolutely have to have a Hub Transport server that is only used for application relay then I don’t see any other option right now. But it will cost money, because you’ll need to build at least one AD domain controller in that new AD Site as well.

]]> By: Akhil https://practical365.com/case-hub-transport-server-load-imbalance/#comment-12733 Wed, 12 Mar 2014 06:38:49 +0000 https://www.practical365.com/?p=4651#comment-12733 But, if I Please hub server in separate AD site then for application server there will be very long route for relay the mail

]]> By: <div class="apbct-real-user-wrapper"> <div class="apbct-real-user-author-name">Paul Cunningham</div> <div class="apbct-real-user-badge" onmouseover=" let popup = document.getElementById('apbct_trp_comment_id_12732'); popup.style.display = 'inline-flex'; "> <div class="apbct-real-user-popup" id="apbct_trp_comment_id_12732"> <div class="apbct-real-user-title"> <p class="apbct-real-user-popup-header">The Real Person!</p> <p class="apbct-real-user-popup-text">Author <b>Paul Cunningham</b> acts as a real person and passed all tests against spambots. Anti-Spam by CleanTalk.</p> </div> </div> </div> </div> https://practical365.com/case-hub-transport-server-load-imbalance/#comment-12732 Wed, 12 Mar 2014 01:50:02 +0000 https://www.practical365.com/?p=4651#comment-12732 In reply to Akhil.

I suppose you could achieve this by placing the Hub Transport server in a separate AD Site.

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