How to tell postfix to quit sending the same mail over and over again

[T. Mohrfeldt (Liesegang GmbH)]

Thanks for your input, Chris,

I already looked at the postfix queue, and occasionally see the 
aforementioned mail,
but each time with an new ID, so deleting might stop one mail from 
heading off, but not the flood.

I fear looking in maillog, because I'm super bad at finding the relevant 
parts (especially with >50 users accounts and their interactions), but I 
might to take a bite of that sour apple and poke through...

My theory is that the receiving server doesn't signal my server the 
complete transmission of the mail, but it's just a wild guess.
And so I need to stop that on my side, but I am really puzzled from 
where postfix get's the mail handed over...


Torben

-- 

  LIESEGANG GMBH

Stadtweg 22 • 24837 Schleswig

Tel.: +49 (4621) 99 46 07 3
Fax: +49 (4621) 99 46 07 0
GPG/PGP ID: CE040A70


Am 24.04.2019 17:52, schrieb Chris Fleming:

> I would start by looking at postfix queues:
> 
> mailq - will list everythings in queues. You can delete using
> 
> postsuper -D
> 
> Also I presume that you've checked the mail logs, to see if there are 
> any clues?
> 
> Cheers Chris
> 
> On 24/04/19 at 04:06pm, T. Mohrfeldt (Liesegang GmbH) wrote:
> 
>> Hello fellow Kolab users,
>> 
>> I'm struggling with a serious problem here.
>> 
>> One of my users sent a very large e-mail (round about 32m) to a 
>> business partner of us. All went as expected. But my server won't stop 
>> sending this particular mail. I already deleted it from the users 
>> mailbox (via bash and via roundcube) nontheless the floodgates are 
>> still open and roughly all 15 seconds our business partner receives 
>> this mail.
>> 
>> Till now he's a good sport about it, but I'd rather stop his agony and 
>> put an halt to this.
>> 
>> But I have no clue from which service/directory/whatever this e-mail 
>> gets pumped into postfix.
>> 
>> ANY hints where exactly to look and how I can stop this behaviour is 
>> HIGHLY appreciated from my side.
>> 
>> Server: CentOS7 System and Kolab fully patched.
>> 
>> With kind regards
>> 
>> Torben Mohrfeldt
>> 
>> --
>> 
>> LIESEGANG GMBH
>> 
>> Stadtweg 22 * 24837 Schleswig
>> 
>> Tel.: +49 (4621) 99 46 07 3 Fax: +49 (4621) 99 46 07 0 GPG/PGP ID: 
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