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It is possible to use an insert command to add the rules ahead of the blocking rules. However, only 1 or possibly 2 servers should be sending email to the Internet. If necessary add firewall rules on your hosts to allow only their mail server to send email. This should disable bots, or at least provide the ability to log and trace the problem. I would ...


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You need to send an ALRM signal to it after the TLS go ahead, killall -ALRM gnutls-cli You can do this via another terminal or by hitting Crtl-Z to background the current process, doing the killall command, then typing fg to return to the SMTP session.


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It seems this entry only in /etc/postfix/main.cf applies to Ubuntu/Debian systems. virtual_transport = lmtp:unix:private/dovecot-lmtp With CentOS systems you'll need to specify the following instead: virtual_transport = dovecot You'll also need to add this entry in the /etc/postfix/master.cf file: dovecot unix - n n - - pipe flags=DRhu ...



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