Mail delivery failure to Gmail addresses

I am having difficulty sending emails to several Gmail addresses. I receive a message with the following information:

Mail delivery failed: returning message to sender

This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The following address(es) failed:

w*********@gmail.com

    host gmail-smtp-in.l.google.com [142.250.102.27]

    SMTP error from remote mail server after end of data:

    550-5.7.26 This mail is unauthenticated, which poses a security risk to the

    550-5.7.26 sender and Gmail users, and has been blocked. The sender must

    550-5.7.26 authenticate with at least one of SPF or DKIM. For this message,

    550-5.7.26 DKIM checks did not pass and SPF check for [rpsprotection.com] did

    550-5.7.26 not pass with ip: [66.96.184.2]. The sender should visit

    550-5.7.26 https://support.google.com/mail/answer/81126#authentication for

    550 5.7.26 instructions on setting up authentication. j5-20020aa7ca45000000b0051064a9f901si322462edt.595 - gsmtp

I am using Microsoft 365 Outlook on a Windows 11 PC.

Thank you.

This conversation is no longer open for comments or replies and is no longer visible to community members.

Responses

T

three_in_one1063

1 Message

•

60 Points

4 months ago

All my sent emails are bouncing back. It is not just G-mail accounts, it is every email. So frustrating. I have no choice but to move over to a different server and say goodby to homestead mail.

1

0

Hello,
Can you try sending once more? I was able to update the email records, and that should take care of most bouncebacks. Please keep in mind, we do have a reported issue when sending to Outlook or Microsoft emails, but others should deliver fine now.

4 months ago

0

todd_h

970 Messages

•

29.3K Points

4 months ago

Hello Ken7528,
I was able to update the TXT record for all of your domains which should resolve the issue when sending to Gmail addresses. Can you try once more on your end to confirm they are delivering fine now?

1

0

donald4780

13 Messages

•

326 Points

@todd_h I'm having the same problem (Mail delivery failed: returning message to sender). Can you send me in the correct direction so i can get this fixed without upsetting too many of my clients? Don

3 months ago

0

S