Exchange Server
A family of Microsoft client/server messaging and collaboration software.
1,193 questions
This was investigated and corrected.
Check the PTR now for
2a01:111:f403:c200::1
Its there.
Google is rejecting email
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EfectFit Fitness
5
Reputation points
I have a power automate flow on my sharepoint xxx.onmicrosoft.com. On one ste I have a task to send email. For all email providers it works, just mx.google.com is responding
__[2a01:111:f403:c200::1] The IP address sending this message does not have a PTR record setup, or the corresponding forward DNS entry does not match the sending IP. As a policy, Gmail does not accept messages from IPs with missing PTR records. For more information, go to https://support.google.com/a?p=sender-guidelines-ip To learn more about Gmail requirements for bulk senders, visit https://support.google.com/a?p=sender-guidelines. 6a1803df08f44-6b79440416esi4172556d6.232 - gsmtp
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I have fully managed DNS by Microsoft and I cant change nothing. This email responses starts 2 days ago.
What I have to setup to cerrectly deliver emails?
Just for info, i am sending around 30 email per day, but critical**__
{count} vote
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Jake Zhang-MSFT 3,510 Reputation points Microsoft Vendor2024-07-18T06:04:01.57+00:00 Hi @EfectFit Fitness,
Welcome to the Microsoft Q&A platform!
According to your description, this issue is not for Exchange Server or Exchange Online. As you mentioned “For all email providers it works, just mx.google.com is responding. Gmail does not accept messages from IPs with missing PTR records.”, we could know that this issue is caused by the limit/settings in Google, we suggest you contact support team of Google directly. Thanks for your understanding!
Best,
Jake Zhang
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Bruce Corkhill 0 Reputation points2024-07-22T09:45:24.0166667+00:00 This is not an issue with GMail but an issue with Microsoft.
Microsoft has screwed up and forgotten to set up reverse DNS (DNS PTR record) on their outbound mail services IP address 2a01:111:f403:c200::1.
This means that if anyone sends emails from Microsoft mail services and the email is sent from the IP 2a01:111:f403:c200::1, it will be rejected by GMail and almost all other mail services because this IP is missing its reverse DNS.
Let's hope that Microsoft fixes the issue soon as it looks to have been ongoing for a while.
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