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From: Ben Rosengart (brpanix.com)
Date: Wed May 02 2001 - 16:54:06 CDT

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    Am I correct in guessing that giving this argument to smtpd_*_restrictions
    causes clients with no reverse DNS entries to be unable to send mail?

    What if they have reverse DNS but it doesn't agree with the A record,
    what happens then?

    I'd like to have a setup where my servers could reject mail with
    a 5xx code if the name server is reachable and doesn't have a record
    for the SMTP client, and a 4xx code if the name server isn't
    reachable or responding. Is there any way to do this with Postfix?

    Thanks in advance. 

    -- 
Ben Rosengart
(212) 741-4400 x215

    "My hair is my password.  Verify me."

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