Hello everyone,
For the past 2 weeks, we have been unable to send mails to any gmail users, nor
any email domains hosted on Google's mail servers. We are using Microsoft 365.
Every time we attempt to send a message, we get the following bounce-back:
550 5.7.350 Remote server returned message detected as spam -> 550 5.7.1
[2a01:111:f403:261b::700 19] Gmail has detected that this message;is likely
suspicious due to the very low reputation of the sending;domain.
To best protect our users from spam, the message has been;blocked. For more
information, go to; https://support.google.com/mail/answer/188131
im8-20020a056214246800b00696b2e6b32asi14453219qvb.337 - gsmtp
I have been in touch with Microsoft 365 support and they have double checked
our SPF / DMARC / DKIM records and all are correct.
The only advice Microsoft will give is to speak to Google.
I have filled out one of Googles email cases, explaining that our DNS records
are set up correctly and we are not spamming.
Unfortunately, we have had no reply after a week.
Is there anything we can do to help resolve the issue?
Many thanks,
Simon
Simon Branch
IT CONSULTANT
t: 020 8254 0090 |
e: si...@steelplanp.com
e: cont...@steelplan.com | w: steelplan.com
a: 67 South Street, Epsom, Surrey, KT18 7PY
Incorporating:
• Steelplan Products - A division of Steelplan Ltd (Reg Number
02683105)
• Steelplan Kitchens Ltd (Reg Number 13351408)
• Aether Lighting Ltd (Reg Number 06581027)
Group VAT Number GB 180541129
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