Re: [gentoo-user] Anyone using Yahoo as Postfix relay? (Name service error for name=smtp1.mail.vip.ukl.yahoo.com type=MX: Malformed name server reply)

[Enrico Weigelt <weigelt@metux.de>]

* Stroller <stroller@stellar.eclipse.co.uk> wrote:

Hi,

> >Did you authenticate propery @smtp.mail.yahoo.co.uk ?
> 
> I believe so. There's nothing in the logs to indicate that I haven't,  
> and the user:pass in /etc/postfix/sasl_passwd is correct,

Is there any note that it even tried to authenticate ?

<snip>

> >>I think this would only satisfy mg1.uky.edu if you yourself relayed
> >>anything to its domain via Yahoo. And for that you would require an
> >>SMTP account with Yahoo.
> >
> >My relays push the mails to the MX'es defined in the domains.
> >Maybe I missed the point, but I don't see why this shouldn't work.
> 
> My box normally pushes to the MX defined for the domain, too, but  
> mg1.uky.edu will reject SMTP deliveries for any message with a From:  
> address where the domain doesn't match the sending machine. As I have  
> already explained.

Stupid configuration, since the admin expects MX and relay to be 
the same, which is a very bad assumption, but well, let's give it 
to him: relay through another box, which rewrites the headers of
the mails to this bogous mx.

AFAIK, sendmail's genericstable can help here:
Mask the from dependent on the destination.


cu
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