Postfix: Immediate disconnect from

My wife expected some e-mail, but it did not arrive in her mailbox. Looking at log file I saw:

postfix/smtpd[14884]: connect from[]
postfix/smtpd[14884]: disconnect from[] ehlo=2 starttls=1 quit=1 commands=4

Nothing more. A connect and an immediate disconnect from the mail server.

Sending a mail from a test account worked fine and arrived in my inbox. Then I saw that the e-mail should have had an attachment, and I added a 12 MiB file to the mail in the freemail interface and sent it. The log showed the same behavior: Connect and disconnect.

The interface did only show that the mail was sent, but nothing more.

postconf told me that the maximal e-mail size was 10240000, which is 10 MiB. I increased message_size_limit to 100 MiB (104857600), reloaded postfix daemon and I could receive the mail.

Written by Christian Weiske.

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