------ Originalnachricht ------
Von: "Laura Atkins via mailop" <mailop@mailop.org>
An: "mailop" <mailop@mailop.org>
Gesendet: 02.06.2021 10:55:31
Betreff: Re: [mailop] protection.outlook.com refusing to accept mail
with misleading temp error message
I know! I saw a bounce message JUST THIS MORNING from a client that
blocked AS(201806271). How granular is that?
Diagnostic-Code: smtp;550 5.4.1 All recipient addresses rejected :
Access denied. AS(201806271)
[BN8NAM12FT022.eop-nam12.prod.protection.outlook.com
<http://bn8nam12ft022.eop-nam12.prod.protection.outlook.com/>]
laura (FYI: the AS in the blocking message stands for Anti-Spam and the
number is an internal MS diagnostic code. It is not referencing an
Autonomous System number)
On 1 Jun 2021, at 11:54, J. Hellenthal via mailop <mailop@mailop.org>
wrote:
Oh man! They got the whole ASN !
Not just the A but the S and the N too!
Thorough 🤪
--
J. Hellenthal
The fact that there's a highway to Hell but only a stairway to Heaven
says a lot about anticipated traffic volume.
On Jun 1, 2021, at 05:38, André Peters via mailop <mailop@mailop.org>
wrote:
Von: "Hans-Martin Mosner via mailop" <mailop@mailop.org>
An: mailop@mailop.org
Gesendet: 01.06.2021 12:04:54
Betreff: Re: [mailop] protection.outlook.com refusing to accept mail
with misleading temp error message
Am 28.05.21 um 15:22 schrieb Hans-Martin Mosner via mailop:
Am 28.05.21 um 13:47 schrieb Hans-Martin Mosner via mailop:
Anyone from Microsoft/Outlook available to look into the matter?
Seems everything is ok now - either someone looked into the matter
(thanks!) or some timeout ran out :-)
Same problem again, for no discernible reason. No contact from MS,
no explanation, no abuse complaint.
Given the ongoing flood of spam from bot-created hotmail accounts
this is a bit odd...
Cheers,
Hans-Martin
This is a never ending story. :-D
Pretty annoying. One of our ASNs was blocked for a day recently,
there was no difference in mail volume or content, it is a
low-traffic ASN for little communication. The whole ASN. Once in a
while these things happen with MS. It's normal.
Yes, given the amount of outbound spam I don't understand how their
filter or intelligence works at all. I guess nobody knows anymore at
this point.
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Laura Atkins
Word to the Wise
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(650) 437-0741
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They _DO_ block whole networks (not just subnets within an AS).
It might not be the case in the example above, but it does happen.
Or silently discarding mail... come on, that's just the worst practice
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