Greg Hackney wrote:
> ian_leroux@fastmail.fm wrote:
> > I have postfix 2.3.3 installed and configured on a home machine
> > (running debian etch, if it matters). Since I have a dynamic IP, I'm
> > using the sender-dependent relay host and authentication features to
> > relay my mail out through one of two servers on which I have accounts.
> > Of the two, one works fine, while the other consistently gives me
> > "relay access denied" bounce messages, which I assume means I'm not
> > authenticating properly with it. How can I find out if the smtp client
> > is attempting to authenticate and, if so, why it isn't succeeding? All
> > the logs and reports I've looked at merely have the failure message
> > itself, not the previous history. I've tried using sendmail -v and
> > debug_peer_list, perhaps incorrectly.
> >
> > Example error message:
> >
> > Sep 21 20:07:06 spip postfix/smtp[20508]: C23893A626: to=<XXX@mit.edu>,
> > relay=in1.smtp.messagingengine.com[66.111.4.73]:25, delay=0.89,
> > delays=0.03/0.03/0.32/0.51, dsn=5.0.0, status=bounced (host
> > in1.smtp.messagingengine.com[66.111.4.7
> > 3] said: 554 <XXX@mit.edu>: Relay access denied (in reply to RCPT TO
> > command))
> >
> > To add insult to injury, it was working last week, and I can't figure
> > out what relevant change I might have made.
> >
> > Any guidance would be much appreciated.
> >
> > Ian
>
>
> The server that you are connecting to doesn't support SMTP AUTH.
> There are no AUTH mechanism being advertised, as shown below:
>
>
> # telnet 66.111.4.73 25
> Trying 66.111.4.73...
> Connected to 66.111.4.73.
> Escape character is '^]'.
> 220 mx4.messagingengine.com ESMTP . No UCE permitted.
> ehlo hippie.cincomail.com
> 250-mx4.messagingengine.com
> 250-PIPELINING
> 250-SIZE 71000000
> 250-ETRN
> 250 8BITMIME
Thank you very much. That pin-pointed the problem for me: I'd enabled
MX lookups by removing the square brackets around the hosts in the
sender-dependent relayhosts map, so that I was trying to authenticate
with the wrong server for outbound traffic.
Thanks again for the assistance,
Ian