support@pspad.com offline?

After sending an "Err Log" to the adress above:

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:
support@pspad.com
host: a.mx.pspad.com (81.0.235.44) reason: 550 sorry, permanent envelope failure (#5.7.1)
-Kawesi-

Edited 1 time(s). Last edit at 2020-03-04 23:59 by Kawesi.

Thank you for info, I will let hosting check it.

Edited 1 time(s). Last edit at 2020-03-05 06:37 by pspad.

Problem identified.
My server (1&1) isn't able to send eMails correctly.
Gmail does it!
Thanx Jan...
-Kawesi-

I will wait for my hosting reply

Webhosting replay:
Sender's mail server is on several blacklists, this is reason, why mails are blocked.

Thanx for replying
It seem that server 1&1 is at more blacklists cause declaires (more or less hidden), that it can't send mails to Outlook recipients.
What a blame for a million user server.
-Kawesi-