Someone is sending Mails from my server

Fella · March 30, 2021, 10:30am

Operating system: ubuntu
OS version: 18.04.5 LTS

How to fix this problem, mail are auto-send can’t stop

toli · March 30, 2021, 11:37am

Check what script sends email:
postcat -q MailID | grep X-PHP-Originating-Script

Then block it or delete.

Fella · March 30, 2021, 12:09pm

postcat: fatal: open queue file MailID: No such file or directory

simon1066 · March 30, 2021, 12:15pm

I suspect you were meant to substitue MailID with one from the MailID column in your mail queue window.

toli · March 30, 2021, 12:18pm

Ilia · March 31, 2021, 11:20pm

Please check that your Postfix is not configured as opened relay and/or that your user accounts passwords are not compromised. Have a look at server’s mail log.

By the way, by default Virtualmin never configures Postfix as opened relay.

Fella · April 1, 2021, 8:02am

Thanks for replying, can you send me how to configure Postfix opened relay guide?