Mail Server Rejecting all Messages – Check your Blacklists is listing the WORLD

Monday, March 31st, 2008

It’s unusual for mail servers to suddenly start rejecting messages internally and from external sources. That’s exactly what I saw though over the weekend. A mailserver running mdaemon on Windows 2000 was rejected ALMOST every message that was sent it’s way whether it was an internal mail sender and recipient or external sender to internal [...]

Is something up with

Monday, December 11th, 2006

I’ve noticed several times in the last week a server of mine that is using postfix has rejected messages due to a failure in the lookup at At first, I thought this was just a false positive in the database at ordb… but this morning I finally “caught it” while it was happening and [...]


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