I am pretty lost here, my server somehow got into a blacklist. And I don't know why and how to solve it. Please take a look at the link below.
Anyone knows what is going on here? I am not spamming mails, I am just hosting a forum.
I will provide any information needed, just reply.
EDIT: I have gotten this email.
This is the mail system at host localhost.localdomain.
I'm sorry to have to inform you that your message could not be delivered to one or more recipients. It's attached below.
For further assistance, please send mail to postmaster.
If you do so, please include this problem report. You can delete your own text from the attached returned message.
The mail system
grey-area.mailhostingserver.com[188.8.131.52] said: 550 5.7.1
: Helo command rejected: Host not found (in reply to RCPT TO command)
Final-Recipient: rfc822; *******@atlantmail.com Action: failed Status: 5.7.1 Remote-MTA: dns; grey-area.mailhostingserver.com Diagnostic-Code: smtp; 550 5.7.1 : Helo command rejected: Host not found
My postfix settning:
myhostname = yo.atlava.com alias_maps = hash:/etc/aliases alias_database = hash:/etc/aliases myorigin = /etc/mailname mydestination = atlava.com, yo.atlava.com, localhost.atlava.com, localhost (none):~# hostname -f hostname: Unknown host