Changing Pop3 Connector message size in Small Business Server 2008
by Andrius on Apr.26, 2009, under Microsoft
By default message size in SBS2008 is set to 10MB. So if you are using Pop3 Connector to get mails and someone sends an email with attachment that is more than 10MB, Pop3 connector will not download the message and will log an error with Event ID: 210
One or more messages (1) were left in the ‘email’ account on the POP3 server ‘mail.server.com’ because they are larger than the maximum acceptable message size (the largest message is 14781808 bytes). You can either connect to the POP3 account and retrieve or delete the messages manually, or increase the maximum acceptable message size in Exchange Server.

As the error says in order to fix the problem you need to increase the, message size and this is exactly what I did. I went to Exchange Management shell and increased the message size on the 2 receive connectors from 10MB to 50MB.

But it still did not worked apparently you have to increase the message size also on FAX receive connector.

Once that was done the mails started coming in.
June 9th, 2009 on 22:14
Tanks!
August 21st, 2009 on 08:45
thx
IT’s works,
very funy joke from MS
September 15th, 2009 on 11:27
THANKS!!!
But why all 3 connectors?
July 21st, 2010 on 09:22
Thanks!
August 31st, 2010 on 16:49
Great find! I have trying to get this to work for a couple days.
August 26th, 2011 on 21:18
excellent submit, very informative. I ponder why the other experts of this sector don’t realize this. You must continue your writing. I’m confident, you have a huge readers’ base already!
September 26th, 2011 on 14:35
Thanks so much – this was really helpful
October 28th, 2011 on 01:42
Thanks for the guide
December 13th, 2011 on 23:45
Thanks!!! This also works with SBS2011. Wouldn’t have guessed the fax connector receive size was the issue!