- Plesk for Linux
- Postfix with SPF is used.
- If sending emails to multiple recipients, a lot of the following lines can be found in email headers:
CONFIG_TEXT: Received-SPF: pass (100.example.com: localhost is always allowed.) client-ip=::1; email@example.com; helo=localhost.localdomain;
- Also, the following messages can be found:
CONFIG_TEXT: 552 5.7.0 Number of 'Received:' DATA headers exceeds maximum permitted (in reply to end of DATA command)
#PPPM-3456 " Fixed the issue where sending an email to multiple recipients via the Postfix server with SPF enabled
resulted in multiple “Received-SPF…” lines instead of one line. "
If update is not possible for some reason you may try the following
Upgrade Plesk to Plesk Onyx 17.5 or higher.