Solutions for Pop3 Connector issues on SBS 2011- one or more messages were left in the account because they are larger than the maximum acceptable message size

If you are getting EventID 210 on your SBS 2011 server – with a message like…

[message_box title=”Event ID 210″ color=”red”]One or more of the messages (message number) were left in the ‘[accountname]’ account on the POP3 Server ‘[servername]’ because they are larger than the maximum acceptable message size (the largest message is [messagesize] 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.[/message_box]

Event ID 210

Then you can fix it by opening the Exchange Powershell Management Tool…

Exchange Management Tool

And performing these commands which will change the maxmessage size up from the default 10mb to something more realistic (50mb/message).

set-receiveconnector “Windows SBS Fax Sharepoint Receive [servername]” -maxmessagesize 50mb

Crazy I know – but you need to change this one too for the change on the Pop3 connector to work!

set-receiveconnector “Windows SBS Internet Receive [servername]” -maxmessagesize 50mb

set-receiveconnector “Default [servername]” -maxmessagesize 50mb

Exchange powershell

After that the messages will happily roll in and the errors will stop. Unless someone decides that a 50mb attachment to your client is achievable…

Authored by Ian


Ian Johnson is a Director of OJ Networks. He has been working in IT since 1995. Mentored by the best, Ian started as Technical Support Officer for an innovative dialup ISP in Brisbane “Hub Communications”. He progressed to become a Web Design and Programmer in ASP, ASP.NET and PHP during his time at “The Lab Development Group” with David Vandenberg amonst others. Ian has been working as a Consultant on the Sunshine Coast since 2001 and became a Microsoft Certified Information Technology Professional (MCITP) Server Administrator in 2010 after which he formed OJ Networks. He has assisted numerous small businesses to reach their potential through IT Infrastructure Planning and Implementation and Web design, Development and Web Marketing. You can connect with Ian on Linked In.

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  • anthem

    thanks very helpful