This is an automated archive made by the Lemmit Bot.
The original was posted on /r/selfhosted by /u/Fromdozimomat on 2025-04-23 09:28:59+00:00.
Hey,
just wanted to share one of the stupidest things I econtered in over 30 years of network engineering....:
In Germany, if you want to send a mail with a correctly configured mailserver hosted in a big datacenter - also in germany - you have to register by email (!) [tosa@rx.t-online.de](mailto:tosa@rx.t-online.de) that you wish to be whitelisted.
But thats not all.. Say, the mailserver is reachable at mxwhatever.whateverdomain.com you have to (!!!) host a https-Site on THAT domain (mxwhatever....) with contact Details of the person in charge.
Else they deny it.......
Looks like this in the logs:
[111.11.111.1]:25, delay=0.18, delays=0.02/0.01/0.16/0, dsn=4.0.0, status=deferred (host mx00.t-online.de[194.25.134.8] refused to talk to me: 554 IP=111.111.11.111 - A problem occurred. Ask your postmaster for help or to contact tosa@rx.t-online.de to clarify. (TEM))
So, Selfhosted email admins, please support this nonsense and write ALL an Email with you mailservers to [tosa@rx.t-online.de](mailto:tosa@rx.t-online.de) to get whitelisted!
If they get thounsands of Emails each day, maybe they wake up and consider this idea idiotic.....