You can use any of the following services to see if your IP address(s) have been blocked,

• The Abusive Hosts Blocking List
  www.ahbl.org/lktool
• SpamCop Blocking List
  www.spamcop.net/bl.shtml
• Spamhaus Block List (SBL)
  www.spamhaus.org/sbl/
• Composite Blocking List (CBL)
  cbl.abuseat.org/
• Weighted Private Block List (WPBL)
  www.wpbl.info/

Other articles in this Category

Tips to solve email problem(s)

MS Outlook/Express Error Codes

When I try to log into Horde, it simply goes back to the page asking for the language

How can I stop Spamassassin from marking all internal emails as spam?

How do I create an SPF record for my domain?

How do I enable reverse DNS lookup in Exim?

Is it possible to purge spoofed email?

Tips to avoid getting your server blocked by Hotmail/Yahoo/Gmail

Exim, or Postfix, or Qmail, or Sendmail :: MTAs Comparison

I am wondering if my server is being used to send out or relay spam. How can I check?

LibClamAV Error: Can't load daily.mdb: Malformed database

My Mail server was reported as an open relay. Is this true?

HowTo :: migrate or switch from Courier IMAP/POP3 to Dovecot