550 5.5.1 Protocol error

Created on 29 July 2016, over 8 years ago
Updated 7 January 2025, 12 days ago

I am getting the above message from some mailserver (posteo.org) in response to the validation test.

According to https://www.roessner-network-solutions.com/mail.html

they must think that the request is somehow invalid. Anybody got an idea?

πŸ› Bug report
Status

Active

Version

2.0

Component

Code

Created by

πŸ‡©πŸ‡ͺGermany killes@www.drop.org

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