What means Failure code: 7b3f

Question

Hello,

When I sent an email, it was not delivered. The reply told me there is a Failure code: 7b3f.

What does this mean?

Answer 1

Having same issue, error code 7b3f when sending mail, have no issues receiving email, able to send email from browser but not on outlook on Mac

Answer 2

Hello I have the same issue and YES, using webmail to send did work. So what does that tell me? I want to use Outlook, not webmail. Thanks for any help

Tim F

Answer 3

I am receiving my email, but get the 7b3f error when I send email. It takes 12 hours or more to get the error.

Answer 4

Hello.

I have same problem with Outlook 365 on Mcbook pro. Somethimes it doing and give me back notice bellow. I have a few email accounts added in outlook and doesn't mather which kind account I used.

Technical details

MessageDeliveryFailedException: Could not deliver the message [len=70, data=0000000082DBBDAFE6D810428DF2CB91C3CA4B320700233080FDBA182647AFD4757BB8FCA0C600000000010F0000233080FDBA182647AFD4757BB8FCA0C600009E949FD10000] sent at 7/11/2023 10:02:35 AM.
Failure code: 7b3f

Thank you for helped me.

Have a nice day.

Josef

Answer 5

Hello,

Thanks for reaching out! I'm Microsoft user like you.

This can be client specific error.

Please try to send email using Web mail from browser and check if the email gets delivered. If issue still persists then please attach screenshot of the error to assist you further.

In case of additional questions, reach out back to me, and I will be happy to help and try our best to resolve your issue.

Best Regards,
Prakash