Date: Mon, 19 May 2008 21:03:00 -0500 From: Paul Schmehl <pauls@utdallas.edu> To: Chuck Swiger <cswiger@mac.com>, Montag <montag@activeattack.com> Cc: freebsd questions <freebsd-questions@freebsd.org> Subject: Re: Problem Sending Mail With Postfix Message-ID: <F457C52823485E9255BDFA00@Macintosh.local> In-Reply-To: <27CE98CC-346E-4051-A745-1F47DEF0760B@mac.com> References: <1211239052.24579.1254029483@webmail.messagingengine.com> <27CE98CC-346E-4051-A745-1F47DEF0760B@mac.com>
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--On May 19, 2008 6:07:53 PM -0700 Chuck Swiger <cswiger@mac.com> wrote: > On May 19, 2008, at 4:17 PM, Montag wrote: >> host mx1.free.bsd.org said: my.mywebsite.com: Helo command rejected: >> Host not found (in reply to RCPT TO command)) >> freebsd-questions@freebsd.org >> >> Any thoughts? > > Many mailservers check that the HELO/EHLO response is a valid hostname. > You can either configure your machine to use a valid hostname (consider > dyndns.org or similar, if you like), or you can relay your email to > something like your ISP's mailserver using relayhost parameter or the > transport mechanism.... I'm not sure what the point of that is: Macintosh:~ pauls$ dig +short my.mywebsite.com 208.87.33.150 Macintosh:~ pauls$ dig +short -x 208.87.33.150 my.mywebsite.com. The site resolves both forward and reverse. So valid hostname is not the problem. It doesn't seem to be listening on port 25 though. Macintosh:~ pauls$ telnet my.mywebsite.com 25 Trying 209.181.247.105... Connected to nullmx.mywebsite.com. Escape character is '^]'. Connection closed by foreign host. Macintosh:~ pauls$ dig +short nullmx.mywebsite.com 209.181.247.105 Which is a bit weird. Montag, the sendmail commands are all aliased to the corresponding postfix commands. For example, you can check the queue with either sendmail's mailq command or postfix's postqueue command. Both launch the same binary. Paul Schmehl (pauls@utdallas.edu) Senior Information Security Analyst The University of Texas at Dallas http://www.utdallas.edu/ir/security/
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