Google アプリのメール経由で smtp 経由でメールを送信すると、以下のエラーが発生します。なぜこのエラーが発生するのか誰にもわかりますか? 私が知る限り、私のドメインは存在します!
THIS IS A WARNING MESSAGE ONLY.
YOU DO NOT NEED TO RESEND YOUR MESSAGE.
Delivery to the following recipient has been delayed:
a.kozikowski@tutek.pl
Message will be retried for 2 more day(s)
Technical details of temporary failure:
Google tried to deliver your message, but it was rejected by the server for the recipient domain tutek.pl by mx.maxus.pl. [213.241.89.166].
The error that the other server returned was:
450 4.1.8 <aquarius@aquariusprams.co.uk>: Sender address rejected: Domain not found