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]

* Stroller <stroller@××××××××××××××××××.uk> wrote:

Hi,

<snip>
> In this case I am getting a bounce message from a mailing-list server
> that says:
>
> <listserv@×××××××.edu>: host mg1.uky.edu[128.163.184.178] said: 554
> 5.7.1 Mail
>     from domain yahoo.co.uk not accepted from host
> compaq.stroller.uk.eu.org
>     (213.152.39.90) - see http://www.uky.edu/email/ (in reply to
> RCPT TO
>     command)

maybe he only accepts only authenticated users to relay ?

> I want to sign up to this list using my @yahoo.co.uk address, you
> see, so the logical thing to do is have postfix deliver everything
> with a from address @yahoo.co.uk using yahoo's SMTP server as relayhost.

Please do not mix up (outgoing) relay of some provider and (incoming) MX
for some domain. They're completely different things (which only *may* 
point to the same host). 

> I understand that this is at least a little bit of a pain
> <http://archives.neohapsis.com/archives/postfix/2004-08/0618.html> so
> for me it's easier to send everything going to lsv.uky.edu via Yahoo.

Doesn't postfix have some feature like sendmail's mailertable ?

> I had expected this to be easy enough. Yahoo tells me that my server
> settings are:
>   Outgoing Mail Server (SMTP):   smtp.mail.yahoo.co.uk

<snip>

>   Jun 22 02:56:20 compaq postfix/smtpd[6213]: 309B31263BB:
> client=unknown[192.168.1.103]
>   Jun 22 02:56:20 compaq postfix/cleanup[6216]: 309B31263BB: message-
> id=<0CEB75CF-67BC-45FA-9B62-0DE7D2472775@××××××××.uk>
>   Jun 22 02:56:20 compaq postfix/qmgr[6174]: 309B31263BB:
> from=<my_yahoo_id@××××××××.uk>, size=579, nrcpt=1 (queue active)
>   Jun 22 02:56:20 compaq postfix/smtp[6217]: warning:
> valid_hostname: empty hostname
>   Jun 22 02:56:20 compaq postfix/smtp[6217]: warning: malformed
> domain name in resource data of MX record for smtp.mail.yahoo.co.uk:
>   Jun 22 02:56:20 compaq postfix/smtp[6217]: warning:
> valid_hostname: empty hostname
>   Jun 22 02:56:20 compaq postfix/smtp[6217]: warning: malformed
> domain name in resource data of MX record for
> smtp1.mail.vip.ukl.yahoo.com:

yeah, postfix gets confused by the "." MX reference for the domain 
smtp1.mail.vip.ukl.yahoo.com. Although it is an unclean configuration, 
I do not see what this has to do with your relay ... your postfix
just has to pull its mails (for yahoo.co.uk) to smtp.mail.yahoo.co.uk,
and it has an proper A record, so what does it need the MX record for ?


BTW: if you don't get it fixed, you may get an UUCP account for 
relay at my site.


cu
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 Enrico Weigelt    ==   metux IT service

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