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Best Practices for preventing you from looking like a spammer

I use Exim4 as MTA on Ubuntu server. The problem is that all outgoing emails are being flagged as spam by google mail. It is very annoying. I appreciate your hints and possible solutions.


One thing to look at is there being a valid reverse name for your mail server. If your mail server is "mail.mycompany.com" yet when resolved, has a different name, some servers, like mine, will reject your email. Another thing to verify is your mail server having an SPF record. Little more information may help resolve this.

  • I addes SPF record to my DNS records, but it had not effect. HOw can I check the reverse name of the mail server? – alfish Aug 3 '11 at 2:57
  • Using mxtoolbox.com, I figured out that my IP has been blocked by two spam blacklists. – alfish Aug 9 '11 at 23:29

there are too many factors. Your server have been send email out too many people and someone probably report your email as a spam email. I would rename the send email to something and send the email on the different email server with a different ip address.

  • Well, at least this is not the case. In fact this occured on a fresh install of the server. – alfish Aug 3 '11 at 0:06

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