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Re: Requires valid sender domain?

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  • mouss
    ... If this address is not modified by relay, then the problem is probably at comcast side. seems like an access control check (would they block domains with
    Message 1 of 8 , Dec 2, 2006
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      Evan Platt wrote:
      > At 03:37 PM 12/1/2006, you wrote:
      >> Evan Platt wrote:
      >>> Not sure if this is postfix related at all...
      >>>
      >>> Mail is sent from my localcomputer to postfix, then via smtpauth to
      >>> my DSL providers SMTP server:
      >>> relayhost = smtp.dslextreme.com
      >>>
      >>> Sent a e-mail to a comcast user and got a e-mail bounce:
      >>>
      >>> 204.127.225.26 does not like recipient.
      >>> Remote host said: 550 [PERMFAIL] comcast.net requires valid sender
      >>> domain
      >>> Giving up on 204.127.225.26.
      >>
      >> and what is the sender address?
      >
      > Same as what I sent to the group, evan@...
      >
      > Evan
      >

      If this address is not modified by relay, then the problem is probably
      at comcast side. seems like an access control check (would they block
      domains with an MX at dyndns?)
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