Forum Discussion

niaccarino1981's avatar
niaccarino1981
Copper Contributor
Oct 20, 2020

Received-SPF: TempError (protection.outlook.com: error in processing during lookup of "domain-name":

I have encountered an issue I believe is extremely widespread (albeit intermittent) affecting deliverability to hotmail.com / outlook.com from .AU Domains.   During the past few days, I have perfor...
SaadItani's avatar
SaadItani
Copper Contributor
Nov 13, 2020

.edu.lb Aslo I want to note that its happening at random times and not for every email. Its been months happening and I contacted TLD NS servers for support and yet no fix.

Also we know that emails getting spf fails are entiteled with email subject: [Warning Unauthenticted User] and again it happens at random times and our end users are getting frustrated... 
we contacted Microsoft support and they said its from DNS side.

webawere's avatar
webawere
Copper Contributor
Mar 19, 2021

We experience the same problem with all our servers. Mail goes to spam because of that 😞

  • sijanec's avatar
    sijanec
    Copper Contributor
    Mar 19, 2021
    You could try removing DMARC restrictions. My mail gets delivered and never flagged as spam because I explicitly stated in my DMARC record that mail with bad SPF/DKIM shall not get flagged as spam. It's weird how DMARC records are accessible to Outlook - maybe they're just cached longer, but my mail never gets to spam.

    Make sure to also enable dmarc-forensic reports so your postmaster will get an email when a mail is delivered into a spam folder.

    More on that on https://dmarc.org/. I hope this issue gets resolved.
    • SaadItani's avatar
      SaadItani
      Copper Contributor
      Mar 19, 2021

      Guys,
      We opened a case with Microsoft 3 weeks ago and they confirm other users are having problems and they said that they are working on the new code that is not released to update there outlook servers regarding the DNS Timeouts. They insisted on me to wait until they roll out the updates which we dont know when.
      In my situation the "Warning Unathenticated" email headers are being resolved as IPV6 by Outlook production server then they do the DNS timeouts.
      example from header analysis mxtoolbox:
      spf:MYDOMAIN:2603:10a6:10:1a5::22 (this is outlook prod server ipv6)
      Received-SPF TempError (protection.outlook.com: error in processing during lookup of MYDOMAIN: DNS Timeout)
      As its a Random problem but happens almost every day.
      Normal emails arrive without warnings the header analysis shows that it resolved an IPV4 of our SPF mail servers and No DNS timeouts.
      Example:
      spf:MYDOMAIN:MyIPv4 from my SPF record
      Received-SPF Pass (protection.outlook.com: domain Mydomain....)

      • povlhp's avatar
        povlhp
        Copper Contributor
        Jun 03, 2021

        Problem persists, we are seeing it here in Denmark.

        Microsoft, please fix these bugs rather than deploy new buggy updates that throws way too much mail in spam / quarantine.

Resources