I'm having another issue. For a few users, the confirmation email and reset password emails get stuck in the mail queue (deferred). It seems to be those going to address for gmx(dot)de. I cannot figure out why! Other users are not having this issue. We rent a VPS from strato. Here is a sample header of a deferred message not going through:
Received: by h2xxxxxxx.stratoserver.net (Postfix, from userid 10000)
id 7E54A14A0DE5; Tue, 18 Sep 2018 17:37:20 +0200 (CEST)
To: =[redacted for privacy]@gmx.de>
Subject: Your request to join [our website name]
X-PHP-Originating-Script: 10000:Sendmail.php
From: [website] Administrator <contact@[our domain name]>
X-Mailer: PHP/5.6.37
Date: Tue, 18 Sep 2018 17:37:20 +0200
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable
Content-Disposition: inline
MIME-Version: 1.0
Message-Id: <
[email protected]>
.....I have never dealt with mail server settings and have no idea what to check, so please be kind. My mail server settings say the following for outgoing mail:
" Send from domain IP addresses"
I don't see any DNS settings within the Plesk panel, so I've no idea where to check on that. But the odd part is why it would only defer these messages to gmx dot de. I cannot figure out why.