Jak w temacie - nie zależnie jak ustawię obsługę poczty otrzymuję na maila taką informację:
Mail delivery failed: returning message to sender
This message was created automatically by mail delivery software.
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:
bambidu@onet.pl
host mx.poczta.onet.pl [213.180.147.146]
SMTP error from remote mail server after RCPT TO:<bambidu@onet.pl>:
554 5.7.1 <bambidu@onet.pl>: Recipient address rejected:
Spf check: fail