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computers / comp.mail.sendmail / Re: Re: Handling retries differently for ‘internal’ and ‘external’ networks

Handling retries differently for ‘internal’ and ‘external’ networks

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From: hzcnjkx656@tormails.com (None)
Newsgroups: comp.mail.sendmail
Subject: Handling_retries_differently_for_‘internal
’ and ‘external’ networks
Date: Thu, 18 May 2023 12:22:27 +0200
Organization: A noiseless patient Spider
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by: None - Thu, 18 May 2023 10:22 UTC

I was wondering if I could tune the incoming mail server better.
Currently these are trying to deliver ndr’s constantly to eg amm@dhl.com
and bounce@nds.fedex.com.

Nice would be if such ‘external’ messages would only be tried to
delivered two or 3 times. For messages that have to be delivered to the
‘internal’ the ‘default’ 5 days can be maintained.

‘internal’ maybe defined as a few ip ranges?

Re: Handling retries differently for ‘internal’ and ‘external’ networks

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From: INVALID_NO_CC_REMOVE_IF_YOU_DO_NOT_POST_ml+sendmail(-no-copies-please)@esmtp.org (Claus Aßmann)
Newsgroups: comp.mail.sendmail
Subject: Re: Handling_retries_differently_for_‘internal
’ and ‘external’ networks
Date: Thu, 18 May 2023 07:06:08 -0400 (EDT)
Organization: MGT Consulting
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by: Claus Aßmann - Thu, 18 May 2023 11:06 UTC

None wrote:

> Currently these are trying to deliver ndr's constantly to eg amm@dhl.com
> and bounce@nds.fedex.com.

Why does your system generate DSNs?
And why aren't those delivered?

Maybe you could fix those problems instead of trying to work around
them and also affecting other mails?

> Nice would be if such `external' messages would only be tried to
> delivered two or 3 times. For messages that have to be delivered to the

And if there is a temporary problem you want the message to fail
after 3 tries?

You could use "Queue Groups" and change the retry times,
but the overall timeout is global -- though there are
some "suboptions", see doc/op/op.*, e.g.,

If the message has a normal
(default) precedence and it is a delivery status
notification (DSN), Timeout.queuereturn.dsn and
Timeout.queuewarn.dsn can be used to give an alter-
native warn and return time for DSNs.

--
Note: please read the netiquette before posting. I will almost never
reply to top-postings which include a full copy of the previous
article(s) at the end because it's annoying, shows that the poster
is too lazy to trim his article, and it's wasting the time of all readers.

Re: Handling retries differently for ‘internal’ and ‘external’ networks

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From: hzcnjkx656@tormails.com (None)
Newsgroups: comp.mail.sendmail
Subject: Re:_Handling_retries_differently_for_‘internal
’ and ‘external’ networks
Date: Thu, 18 May 2023 14:58:30 +0200
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by: None - Thu, 18 May 2023 12:58 UTC

>
>> Currently these are trying to deliver ndr's constantly to eg amm@dhl.com
>> and bounce@nds.fedex.com.
>
> Why does your system generate DSNs?
> And why aren't those delivered?

If ip ranges have been put on a specific blacklist, they will be treated
as greylisting. In the greylist 4xx notification is a link that will
allow the email through when it is clicked. Because these 4xx are not
always (directly) communicated back to the sender, a message to the
envelope is send also.
This message is only send when the spf is valid (for invalid or no spf,
no such message is send)

> Maybe you could fix those problems instead of trying to work around
> them and also affecting other mails?

This is still in trial, for now I would like to see how this goes.

>> Nice would be if such `external' messages would only be tried to
>> delivered two or 3 times. For messages that have to be delivered to the
>
> And if there is a temporary problem you want the message to fail
> after 3 tries?

Yes, currently I have countless tries.

> You could use "Queue Groups" and change the retry times,
> but the overall timeout is global -- though there are
> some "suboptions", see doc/op/op.*, e.g.,
>
> If the message has a normal
> (default) precedence and it is a delivery status
> notification (DSN), Timeout.queuereturn.dsn and
> Timeout.queuewarn.dsn can be used to give an alter-
> native warn and return time for DSNs.
>

Oh ok that looks quite interesting. Obviously I am a little worried that
if something here is down mail is not going to be queued and bounced. So
I would prefer to have something that is deciding on ‘infrastructure’
instead of something like this.

QGRP:slow-poke.com slowgroup
QGRP:root@notify.com fastgroup
QGRP:your.domain localgroup

[1]
https://etutorials.org/Server+Administration/Sendmail/Part+II+Administration/Chapter+11.+Manage+the+Queue/11.4+Queue+Groups+V8.12+and+Above/

Re: Handling retries differently for ‘internal’ and ‘external’ networks

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From: hzcnjkx656@tormails.com (None)
Newsgroups: comp.mail.sendmail
Subject: Re:_Handling_retries_differently_for_‘internal
’ and ‘external’ networks
Date: Thu, 18 May 2023 15:02:34 +0200
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by: None - Thu, 18 May 2023 13:02 UTC

>
>> You could use "Queue Groups" and change the retry times,
>> but the overall timeout is global -- though there are
>> some "suboptions", see doc/op/op.*, e.g.,
>>
>>              If the message has a normal
>>           (default) precedence and it is a delivery status
>>           notification (DSN), Timeout.queuereturn.dsn   and
>>           Timeout.queuewarn.dsn can be used to give an alter-
>>           native warn and return time for DSNs.
>>
>
> Oh ok that looks quite interesting. Obviously I am a little worried that
> if something here is down mail is not going to be queued and bounced. So
> I would prefer to have something that is deciding on ‘infrastructure’
> instead of something like this.
>
> QGRP:slow-poke.com      slowgroup
> QGRP:root@notify.com    fastgroup
> QGRP:your.domain        localgroup
>
> [1]
> https://etutorials.org/Server+Administration/Sendmail/Part+II+Administration/Chapter+11.+Manage+the+Queue/11.4+Queue+Groups+V8.12+and+Above/
>

Would it be possible to ‘tag’ a message with eg. a message header and on
the basis of this header the queue slowgroup is used?

Re: Re: Handling retries differently for ‘internal’ and ‘external’ networks

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From: INVALID_NO_CC_REMOVE_IF_YOU_DO_NOT_POST_ml+sendmail(-no-copies-please)@esmtp.org (Claus Aßmann)
Newsgroups: comp.mail.sendmail
Subject: Re: Re:_Handling_retries_differently_for_‘internal
’ and ‘external’ networks
Date: Thu, 18 May 2023 15:17:05 -0400 (EDT)
Organization: MGT Consulting
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by: Claus Aßmann - Thu, 18 May 2023 19:17 UTC

None wrote:

> Would it be possible to `tag' a message with eg. a message header and on
> the basis of this header the queue slowgroup is used?

No.
Only envelope information (RCPT address) is known when the ruleset
is invoked.

Subject	Author
Handling retries differently for ‘internal	None
Re: Handling retries differently for ‘internal	Claus Aßmann
Re: Handling retries differently for ‘internal	None
Re: Handling retries differently for ‘internal	None
Re: Re: Handling retries differently for ‘internal	Claus Aßmann