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From: tinnews on 2 Aug 2010 15:52
Andy Hawkins <andy(a)gently.org.uk> wrote:
> Hi,
>
> In article <dhvgi7-bqr.ln1(a)chris.isbd.net>,
> tinnews(a)isbd.co.uk<tinnews(a)isbd.co.uk> wrote:
> > Any ideas how I might set about diagnosing this issue?
>
> The other advice is all good. You could also try directly injecting mail
> into the smarthost to see if it gets there:
>
> telnet mail.whatever.com smtp
> mail from: my(a)email.address
> rcpt to: some(a)other.address
> data
> Subject: Test mail
>
> Testing
> .
>
> The '.' on the line by itself indicates the message. You should get
> responses from all the commands up to and including 'data' indicating some
> sort of success. After the '.' you'll probably get some kind of mail system
> identifier.
>
> If this mail doesn't arrive, you need to take it up with the operators of
> your smarthost.
>
Thanks all, various ideas to try, I'll see how I go.

--
Chris Green

From: Andrzej Adam Filip on 3 Aug 2010 00:38
tinnews(a)isbd.co.uk wrote:
> I have a home system running Ubuntu 9.10 which has stopped sending
> mail, or, to be more precise it still sends the mail but it just
> disappears into a black hole, no errors, no nothing.
>
> The system runs Postfix and sends outgoing mail to my ISP's
> "smarthost", it seems to have stopped working all by itslef but I'm
> not *absolutely* sure of that.
>
> The postfix log files in /var/log seem to indicate that the mails have
> been sent successfully but nothing ever arrives, I've tried several
> different destinations.
>
> Any ideas how I might set about diagnosing this issue?

Double check your MTA (postfix) log entries regarding successful
delivery to the smart host and complain to postmaster of the smart host.

Be warned: typical MTA configurations sends back notification sender
after *2 days* of unsuccessful delivery attempt and bounces message back
after *5 days*.

--
[pl>en Andrew] Andrzej Adam Filip : anfi(a)onet.eu : Andrzej.Filip(a)gmail.com
Three may keep a secret, if two of them are dead.
-- Benjamin Franklin
From: Ben Colclough on 3 Aug 2010 03:25
On Mon, 02 Aug 2010 20:52:31 +0100, tinnews wrote:

>>
> Thanks all, various ideas to try, I'll see how I go.

One other thing: check the logs of the *sender*, it may be some anti-spam
measures are kicking him with 55x errors that may only be seen in the
logs of the sender. Ideally, they should bounce back, but I'd personally
look there to see if a 250 is ever given.
From: tinnews on 3 Aug 2010 08:09
Ben Colclough <ben.colclough(a)gmx.com> wrote:
> On Mon, 02 Aug 2010 20:52:31 +0100, tinnews wrote:
>
> >>
> > Thanks all, various ideas to try, I'll see how I go.
>
> One other thing: check the logs of the *sender*, it may be some anti-spam
> measures are kicking him with 55x errors that may only be seen in the
> logs of the sender. Ideally, they should bounce back, but I'd personally
> look there to see if a 250 is ever given.

Yes, something that gave me a clue was mutt reporting a 550 error when
I bounced a mail.
--
Chris Green

From: tinnews on 3 Aug 2010 08:08
tinnews(a)isbd.co.uk wrote:
> Andy Hawkins <andy(a)gently.org.uk> wrote:
> > Hi,
> >
> > In article <dhvgi7-bqr.ln1(a)chris.isbd.net>,
> > tinnews(a)isbd.co.uk<tinnews(a)isbd.co.uk> wrote:
> > > Any ideas how I might set about diagnosing this issue?
> >
> > The other advice is all good. You could also try directly injecting mail
> > into the smarthost to see if it gets there:
> >
> > telnet mail.whatever.com smtp
> > mail from: my(a)email.address
> > rcpt to: some(a)other.address
> > data
> > Subject: Test mail
> >
> > Testing
> > .
> >
> > The '.' on the line by itself indicates the message. You should get
> > responses from all the commands up to and including 'data' indicating some
> > sort of success. After the '.' you'll probably get some kind of mail system
> > identifier.
> >
> > If this mail doesn't arrive, you need to take it up with the operators of
> > your smarthost.
> >
> Thanks all, various ideas to try, I'll see how I go.
>
I've solved it I think.

First, sending direct from my MUA (mutt) to the smarthost worked,
which was a good start and enabled my to ask questions of mailing
lists.

I then realised that a while ago in a fit of tidiness I cleared out
various old records from my hosting provider's zone file and as a
result the machine from which I send mail was no longer a 'real'
name, I guess as a result the smarthost was rejecting mail from it.

--
Chris Green

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