- Plesk for Linux
The mail sent via PHP script from Plesk server is not delivered.
The following record can be found in
CONFIG_TEXT: May 9 22:00:00 server qmail: 1234567890.123456 delivery 1234: failure: Connected_to_203.0.113.2_but_sender_was_rejected./Remote_host_said:550-Verification_failed_forjdoe@example.com/550-Called:___203.0.113.2
Sender email address does not exist on Plesk server.
Receiving mail server performs sender verification and reject mail for non-existing sender.
This behavior cannot be affected on Plesk side.
For contact forms, it is possible to change receiving mail address to the mailbox hosted on the same server and configure forwarding to the required one.