Outlook is returning Remote Server returned '421 4.3.2 Service not available' for two of my groups.outlook.com groups

Anonymous
2022-06-28T02:36:22+00:00

* * * Mod note: See the post by Diane Poremsky MVP * * *

Yesterday and today outlook.com is refusing all group email.
I have two different groups that I use weekly. Today I get this message.'

The recipient's email system isn't accepting messages now. Please try resending your message later or contact the recipient directly.

Generating server: BN6PR19MB0962.namprd19.prod.outlook.com
Total retry attempts: 4

___@___.___
Remote Server returned '421 4.3.2 Service not available'

Original message headers:

Received: from SA0PR19MB4412.namprd19.prod.outlook.com (2603:10b6:806:ba::17)
by BN6PR19MB0962.namprd19.prod.outlook.com (2603:10b6:404:74::9) with
Microsoft SMTP Server (version=TLS1_2,
cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5373.18; Sun, 26 Jun
2022 19:00:06 +0000
Received: from DM4PR19MB6342.namprd19.prod.outlook.com (2603:10b6:8:a7::11) by
SA0PR19MB4412.namprd19.prod.outlook.com (2603:10b6:806:ba::17) with Microsoft
SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id
15.20.5373.18; Sun, 26 Jun 2022 18:59:37 +0000
Received: from DM4PR19MB6342.namprd19.prod.outlook.com

WHAT IS GOING ON WITH OUTLOOK GROUPS??

I create a NEW group to test and it ALSO returns the same error.

* Pinned until August 1, 2022.

Outlook | Web | Outlook.com | Contacts

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  1. Anonymous
    2022-07-05T02:24:51+00:00

    I have had this same problem for more than 10 days. Tried creating a new group, but the same problem.

    Is anyone in Microsoft even looking at this problem? This has been working fine for many months now, so it is a little surprising (1) that this has happened; and (2) they are taking so long to fix it.

    Does anyone know of any workarounds?

    Thanks.

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  2. Anonymous
    2022-07-05T10:18:33+00:00

    Can we please have an update on this issue - silence is unacceptable

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  3. Anonymous
    2022-07-05T10:27:04+00:00

    All I kep getting from them is "Thank you for writing back to us, Let me educate that its a known issue and our engineering team is working on it and once the issue is resolved we will update you regarding the same within 24 to 48 hours." I've had that three times now in the last 13 days.

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  4. Anonymous
    2022-07-05T10:30:06+00:00

    All I keep getting from them is "Thank you for writing back to us, Let me educate that its a known issue and our engineering team is working on it and once the issue is resolved we will update you regarding the same within 24 to 48 hours." I've had that three times now in the last 13 days.

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  5. Anonymous
    2022-07-05T11:22:51+00:00

    This situation is seriously affecting my work. But every day, as you say, seems to be 'we are working on it.' I struggle to believe that Microsoft cannot apply themselves more quickly to this problem if they chose to.

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