Why the messages from domain @wp.pl to firstname.lastname@example.org are rejected?
The spam filter is off in the yahoogroups.com so why?
Hi. This message was created automatically by mail system
at Wirtualna Polska.
I'm afraid I wasn't able to deliver your message to the following addresses.
This is a permanent error; I've given up. Sorry it didn't work out.
Connected to 22.214.171.124 but sender was rejected.
Remote host said: 421 4.7.0 [TSS04] Messages from 126.96.36.199 temporarily deferred due to user complaints - 188.8.131.52; see https://postmaster.verizonmedia.com/error-codes
I'm not going to try again; this message has been in the queue too long.
--- Ponizej znajduje sie kopia listu / Below this line is a copy of the message.
Received: (wp-smtpd smtp.wp.pl 29522 invoked from network); 3 Oct 2020 12:21:23 +0200
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=wp.pl; s=1024a;