Open Relay Checker before Opening MTA

Doug Palmer doug at
Sun Feb 10 12:52:35 EST 2002

Daniel McNamara wrote:

> Due to a recent ugly incident where one of my work place mail servers was
> blacklisted for being an open relay (nothing major it was for some reason
> accepting null <> users to send mail bypassing IP range checks) I found out
> about a handy place called the Open Relay DataBase.

Thanks for the site. It's fascinating to watch the various probes trying 
things I'd never have dreamed of.

Doug Palmer   doug at

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