I was noticed that users from other company cannot sent email to us. And there is always a error message "SMTP data timeout (message abandoned) on connection from ...." in the log file.
I searched on the net, and recognise that this is problem occur at the very beginning of smtp connection, so no way to get more detailed log information for debug, they suggest to use tcpdump to debug this package.
But this is our production email service, then I can not install powerpack to debug it.
Does anybody here knows a solution to find the problem out, and solve it.
Thanks a lot !
astaro version: 3.2.17
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