Topic: Spam Issues IN mailq

==== Required information ====
- iRedMail version: Iredmail 8.3
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): ldap
- Linux/BSD distribution name and version: redhat
- Related log if you're reporting an issue:

Getting lots of these msg on mailq

C61E738009    21522 Tue Nov 20 07:15:50  MAILER-DAEMON
(host eforward2.registrar-servers.com[] said: 450 4.1.1 <Free.Score.Check.360@Lakeherwoodspeed.info>: Recipient address rejected: unverified address: unknown user: "free.score.check.360@lakeherwoodspeed.info" (in reply to RCPT TO command))

Not sure how to stop this


Re: Spam Issues IN mailq

I followed one of the email to see what is happening but not sure.



Re: Spam Issues IN mailq

Any related log in Postfix log file (/var/log/maillog)? Please post related full SMTP session in log file.



Re: Spam Issues IN mailq

I have included the related logs with some new records both mailq and also following that email on the maillog.

Looks like most of them have from=<>



Re: Spam Issues IN mailq

- Maillog shows emails were sent to "mailreturn@smtp8.ymlpsrv.net", is this your domain and user?
- Did you check whether there's some system account sent many emails?
- Do you know these email addresses shown in mailq? Maybe someone hacked your server and logged as system user to send spams.