Can anyone expain this difference between almost identical postfix installations

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Can anyone expain this difference between almost identical postfix installations

Chris Green-11
I am trying to diagnose why messages from on system fail to arrive
whereas identical messages from another similar system arrive
successfully.

Both systems are single board computers running postfix 2.9.6 under
Debian.  The main.cf on both systems is identical.  Both systems are
connecting to the same SMTP server for relaying.

On the system where the message is sent and received successfully I
see (in /var/log/mail.log):-
    Feb 18 17:32:51 pi postfix/pickup[25898]: 2009B22C52: uid=1000 from=<chris>
    Feb 18 17:32:51 pi postfix/cleanup[25978]: 2009B22C52: message-id=<[hidden email]>
    Feb 18 17:32:51 pi postfix/qmgr[21159]: 2009B22C52: from=<[hidden email]>, size=294, nrcpt=1 (queue active)
    Feb 18 17:32:52 pi postfix/smtp[25980]: 2009B22C52: to=<[hidden email]>, relay=mail3.gridhost.co.uk[95.142.156.18]:587, delay=0.97, delays=0.15/0.11/0.36/0.35, dsn=2.0.0, status=sent (250 2.0.0 from MTA(smtp:[127.0.0.1]:10025): 250 2.0.0 Ok: queued as 08DEC26AEC71)
    Feb 18 17:32:52 pi postfix/qmgr[21159]: 2009B22C52: removed



On the system that appears to send OK but the message never reaches its
destination I see:-

    Feb 18 18:32:18 odin postfix/pickup[15648]: 05E963BC3: uid=1001 from=<chris>
    Feb 18 18:32:18 odin postfix/cleanup[15989]: 05E963BC3: message-id=<[hidden email]>
    Feb 18 18:32:18 odin postfix/qmgr[14084]: 05E963BC3: from=<[hidden email]>, size=296, nrcpt=1 (queue active)
    Feb 18 18:32:19 odin postfix/smtp[15991]: 05E963BC3: to=<[hidden email]>, relay=mail3.gridhost.co.uk[95.142.156.18]:587, delay=1.2, delays=0.22/0.11/0.65/0.19, dsn=2.0.0, status=sent (250 2.0.0 Ok: queued as EDA7EE0C39)
    Feb 18 18:32:19 odin postfix/qmgr[14084]: 05E963BC3: removed


Does that 'queued as EDA7EE0C39' in the second case mean that the message
has been put on a queue rather than being sent?  But why?  The messages
are virtually identical, the destination address is the same, etc.


If I send a message from the unsuccessful system to a *different* destination
then it arrives OK, but the messages in the mail.log are the same as above.

--
Chris Green
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Re: Can anyone expain this difference between almost identical postfix installations

/dev/rob0
On Sat, Feb 18, 2017 at 05:43:03PM +0000, Chris Green wrote:

> I am trying to diagnose why messages from on system fail to arrive
> whereas identical messages from another similar system arrive
> successfully.
>
> Both systems are single board computers running postfix 2.9.6 under
> Debian.  The main.cf on both systems is identical.  Both systems are
> connecting to the same SMTP server for relaying.
>
> On the system where the message is sent and received successfully I
> see (in /var/log/mail.log):-
>     Feb 18 17:32:51 pi postfix/pickup[25898]: 2009B22C52: uid=1000 from=<chris>
>     Feb 18 17:32:51 pi postfix/cleanup[25978]: 2009B22C52: message-id=<[hidden email]>
>     Feb 18 17:32:51 pi postfix/qmgr[21159]: 2009B22C52: from=<[hidden email]>, size=294, nrcpt=1 (queue active)
>     Feb 18 17:32:52 pi postfix/smtp[25980]: 2009B22C52: to=<[hidden email]>, relay=mail3.gridhost.co.uk[95.142.156.18]:587, delay=0.97, delays=0.15/0.11/0.36/0.35, dsn=2.0.0,
>     status=sent (250 2.0.0 from MTA(smtp:[127.0.0.1]:10025): 250 2.0.0 Ok: queued as 08DEC26AEC71)

Here the relayhost seems to be using a content filter, and on the
line above is reporting what it has heard through the filter.  It
also reports the queue ID on the other side of the filter, to wit:
"08DEC26AEC71".

>     Feb 18 17:32:52 pi postfix/qmgr[21159]: 2009B22C52: removed
>
>
>
> On the system that appears to send OK but the message never
> reaches its destination I see:-
>
>     Feb 18 18:32:18 odin postfix/pickup[15648]: 05E963BC3: uid=1001 from=<chris>
>     Feb 18 18:32:18 odin postfix/cleanup[15989]: 05E963BC3: message-id=<[hidden email]>
>     Feb 18 18:32:18 odin postfix/qmgr[14084]: 05E963BC3: from=<[hidden email]>, size=296, nrcpt=1 (queue active)
>     Feb 18 18:32:19 odin postfix/smtp[15991]: 05E963BC3: to=<[hidden email]>, relay=mail3.gridhost.co.uk[95.142.156.18]:587, delay=1.2, delays=0.22/0.11/0.65/0.19, dsn=2.0.0,
>     status=sent (250 2.0.0 Ok: queued as EDA7EE0C39)

Here we didn't get anything from the content filter.  The answer of
the question, "Why not?" is probably in the logs on the relayhost.

>     Feb 18 18:32:19 odin postfix/qmgr[14084]: 05E963BC3: removed
>
>
> Does that 'queued as EDA7EE0C39' in the second case mean that the
> message has been put on a queue rather than being sent?  But why?  
> The messages are virtually identical, the destination address is
> the same, etc.

If you don't control the relayhost, talk to the admin there.
--
  http://rob0.nodns4.us/
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Re: Can anyone expain this difference between almost identical postfix installations

Chris Green-11
On Sat, Feb 18, 2017 at 12:06:49PM -0600, /dev/rob0 wrote:

> On Sat, Feb 18, 2017 at 05:43:03PM +0000, Chris Green wrote:
> > I am trying to diagnose why messages from on system fail to arrive
> > whereas identical messages from another similar system arrive
> > successfully.
> >
> > Both systems are single board computers running postfix 2.9.6 under
> > Debian.  The main.cf on both systems is identical.  Both systems are
> > connecting to the same SMTP server for relaying.
> >
> > On the system where the message is sent and received successfully I
> > see (in /var/log/mail.log):-
> >     Feb 18 17:32:51 pi postfix/pickup[25898]: 2009B22C52: uid=1000 from=<chris>
> > Feb 18 17:32:51 pi postfix/cleanup[25978]: 2009B22C52: message-id=<[hidden email]>
>
> > Feb 18 17:32:51 pi postfix/qmgr[21159]: 2009B22C52: from=<[hidden email]>,
> size=294, nrcpt=1 (queue active)
> > Feb 18 17:32:52 pi postfix/smtp[25980]: 2009B22C52: to=<[hidden email]>,
> relay=mail3.gridhost.co.uk[95.142.156.18]:587, delay=0.97, delays=0.15/0.11/0.36/0.35,
> dsn=2.0.0,
> > status=sent (250 2.0.0 from MTA(smtp:[127.0.0.1]:10025): 250 2.0.0 Ok:
> queued as 08DEC26AEC71)
>
> Here the relayhost seems to be using a content filter, and on the
> line above is reporting what it has heard through the filter.  It
> also reports the queue ID on the other side of the filter, to wit:
> "08DEC26AEC71".
>
> >     Feb 18 17:32:52 pi postfix/qmgr[21159]: 2009B22C52: removed
> >
> >
> >
> > On the system that appears to send OK but the message never
> > reaches its destination I see:-
> >
> >     Feb 18 18:32:18 odin postfix/pickup[15648]: 05E963BC3: uid=1001 from=<chris>
> > Feb 18 18:32:18 odin postfix/cleanup[15989]: 05E963BC3: message-id=<[hidden email]>
>
> > Feb 18 18:32:18 odin postfix/qmgr[14084]: 05E963BC3: from=<[hidden email]>,
> size=296, nrcpt=1 (queue active)
> > Feb 18 18:32:19 odin postfix/smtp[15991]: 05E963BC3: to=<[hidden email]>,
> relay=mail3.gridhost.co.uk[95.142.156.18]:587, delay=1.2, delays=0.22/0.11/0.65/0.19,
> dsn=2.0.0,
> >     status=sent (250 2.0.0 Ok: queued as EDA7EE0C39)
>
> Here we didn't get anything from the content filter.  The answer of
> the question, "Why not?" is probably in the logs on the relayhost.
>
> >     Feb 18 18:32:19 odin postfix/qmgr[14084]: 05E963BC3: removed
> >
> >
> > Does that 'queued as EDA7EE0C39' in the second case mean that the
> > message has been put on a queue rather than being sent?  But why?  
> > The messages are virtually identical, the destination address is
> > the same, etc.
>
> If you don't control the relayhost, talk to the admin there.

OK, thanks, that's what I'll do.

--
Chris Green
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Re: Can anyone expain this difference between almost identical postfix installations

Chris Green-11
> > > the same, etc.
> >
> > If you don't control the relayhost, talk to the admin there.
>
> OK, thanks, that's what I'll do.
>
As I suspect the problem is more general than I originally thought I
probably need some rather more non-postfix specific E-Mail help.  Can
anyone suggest where I might ask?

--
Chris Green