Hi,
I have the following problem.
I have IMAP mail server postfix -maximum message size is set to 37MB . From any computer I can send messages with up to such a size but not with the MacBook Pro (software version 10.10.3 ) with Outlook 2011 for Mac . If I try to send a message larger than 4 MB I get an error code -3210 . No visible errors in the server log .

Please help

Mirek