1 Message
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70 Points
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:
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.
three_in_one1063
1 Message
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60 Points
1 day 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.
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todd_h
877 Messages
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28.4K Points
1 day 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?
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ken4317
2 Messages
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72 Points
7 hours ago
Experiencing exact same problem with exact same messages. How do you fix it?
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ken4317
2 Messages
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72 Points
7 hours ago
KLKyte001
Exact same problem getting exact same return message. What's the fix?
Outlook 2010 on Windows 10 PC
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