[CentOS] Sendmail novrfy filter by ip address?
Sean Carolan
scarolan at gmail.comTue Mar 25 14:18:28 UTC 2008
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I have a virus and spam filter device that can do VRFY commands to reject invalid email before it gets to the next mail hop. How can I configure the SMTP server to only allow VRFY commands from one particular IP address, and nowhere else? I don't want spammers to be able to hammer on the gateway looking for valid addresses to send to.
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