sendmail help "Sender address rejected: Domain not found" masquerade

From: Ben Russo (ben_at_muppethouse.com)
Date: 05/18/04

  • Next message: Ben Russo: "Re: ARG: Xinetd is listening on port tcp:514????@" 
    To: redhat-list@redhat.com
Date: Tue, 18 May 2004 11:15:09 -0400

    I have a box on my intranet called nms.intranet.myco.com This host name
    is resolveable on my internal DNS systems, but is hidden from the
    outside world by DNS view ACL's.

    When a regular user account on this box sends an e-mail using the "mail"
      command the "FROM" address is "username@nms.intranet.myco.com". Of
    course that orginating address has a domain that the receiving SMTP MTA
    could resolve if it is on my intranet, but if it is on the intranet then
    DNS will tell it there is no MX record and no A record for that domain
    name. Many receiving MTA's are now rejecting incomming e-mails where
    the FROM address domain is not resolveable. This is a relatively new
    swelling trend, that is in accordance with the RFC's, but in the past
    wasn't widely enforced.

    Anyway, I want to configure sendmail so that outgoing messages from a
    particular local user will have the FROM address rewritten.

    I have tried using genericstable, but it doesn't seem to work right?
    Does anybody have a simple solution for this? I don't want to
    Masquerade the whole domain, I just want a local user's "FROM" address set.

    -Ben. 

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  • Next message: Ben Russo: "Re: ARG: Xinetd is listening on port tcp:514????@"

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