Why are the mails not delivered / blocked every time

Question

Why are the mails not delivered / blocked every time

Anonymous

Mail delivery failed: returning message to sender

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:

**@***.com

host eig-west.smtp.a.cloudfilter.net [34.217.196.71]

SMTP error from remote mail server after end of data:

550 2qIMrEW94b8Qn2qIMrab7L - <**@**.in> message rejected AUP#SNDR

**@**.com

host eig-west.smtp.a.cloudfilter.net [34.223.136.48]

SMTP error from remote mail server after end of data:

550 2qIMrNLKmM0U22qIMr9q8w - <**@**.in> message rejected AUP#SNDR

Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.

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1 answer

Answer 1

Hello Srikanth,

My name is Oluwatosin, and I’ll be more than happy to help you with your query." This is a user-to-user community forum. We do not have access to your account.

I’m sorry to hear that you’re having trouble sending an email.

Did you receive the bounce back for all recipients?

Check the recipient (To) field again and make sure that the address you typed/pasted is correct, remove the autocomplete and retype the email address.

Ask the recipient to check their email server’s firewall settings.

Your email server’s IP address or domain is blacklisted. Go to https://mxtoolbox.com/ to check the IP address of your mail server and verify whether it has been blacklisted:

However, if the steps provided do not help, please share the complete NDR information you received for further assistance.

I hope this helps! Let me know if you have any questions.

Give back to the Community. Help the next person who has this issue by indicating if this reply solved your problem. Click Yes or No below.

Best regards, Oluwatosin.