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Re: RCPT TO problem using relay host

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  • Wietse Venema
    ... Type the recipient domain into a DNS checking website (see search engine for examples) and see if they report any errors. Wietse
    Message 1 of 3 , Jan 1, 2009
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      Dennis Putnam:
      > I have a machine running postfix that is required to relay mail
      > through my ISP's mail server. When I try to send mail, I get this error:
      >
      > 550 [PERMFAIL] destination not valid within DNS (in reply to RCPT TO
      > command)
      >
      > Can someone explain what this error means? If I use 'telnet' to send
      > the RCTP TO command manually it accepts it.

      Type the recipient domain into a DNS checking website (see search
      engine for examples) and see if they report any errors.

      Wietse
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