postfix help

[Paul Schmehl]

--On Wednesday, December 07, 2005 18:01:30 -0500 Michael Sherman 
<msherman77 at gmail.com> wrote:
>
> relay=smtp-rog.mail.yahoo2.akadns.net[206.190.36.18], delay=0,
> status=bounced (host smtp-rog.mail.yahoo2.akadns.net[206.190.36.18]
> said: 530 authentication required - for help go to
> http://help.yahoo.com/help/us/mail/pop/pop-11.html (in reply to MAIL
> FROM command))
> Dec  7 17:46:09 FreeBSD postfix/cleanup[14941]: C244750865:
> message-id=<20051207224609.C244750865 at mike.dyndns.org>
> Dec  7 17:46:09 FreeBSD postfix/qmgr[14908]: C244750865: from=<>,
> size=2600, nrcpt=1 (queue active)
> Dec  7 17:46:09 FreeBSD postfix/qmgr[14908]: 70BED50856: removed
> Dec  7 17:46:09 FreeBSD postfix/smtp[14942]: C244750865:
> to=<michael at FreeBSD.dyndns.org>,
> relay=smtp-rog.mail.yahoo2.akadns.net[206.190.36.18], delay=0,
> status=bounced (host smtp-rog.mail.yahoo2.akadns.net[206.190.36.18]
> said: 530 authentication required - for help go to
> http://help.yahoo.com/help/us/mail/pop/pop-11.html (in reply to MAIL
> FROM command))
> Dec  7 17:46:09 FreeBSD postfix/qmgr[14908]: C244750865: removed
>
> Any ideas?

Yahoo wants authentication.  Postfix doesn't do smtp-auth between 
mailhosts, and it's not going to pass your credentials to the Yahoo MTA 
after you've logged in to it.

You need to ask Yahoo if they will consider your MTA a trusted host for 
relay purposes.

Paul Schmehl (pauls at utdallas.edu)
Adjunct Information Security Officer
University of Texas at Dallas
AVIEN Founding Member
http://www.utdallas.edu/ir/security/