- Plesk for Linux
- Unable to send the email from mailbox email@example.com on the server to mailbox firstname.lastname@example.org on a remote non-Plesk server.
- The following messages can be found in
# cat /var/log/maillog | grep johndoe
Sep 12 14:02:31 mail postfix/smtp: F21C9580BF0: email@example.com , relay=mail.example2.com[203.0.113.2]:25, delay=11, delays=0.08/0/1.5/9.7, dsn= 5.1.7, status=bounced (host mail.example2.com[203.0.113.2] said: 550 5.1.7 <acco firstname.lastname@example.org>: Sender address rejected: undeliverable address: host mail.example2.com[203.0.113.2] said: 550 5.7.0 Your server hostname [hostname.com] for IP [203.0.113.10] matches a pattern which was abusive in the past.. See http://spamauditor.org/best-practices/check_rev
- Domain example.com and IP address is listed in a known blacklist that can be checked on the following site: https://mxtoolbox.com/blacklists.aspx
Domain is blacklisted.
Note: It is possible to involve Plesk Professional Service to handle this task on your behalf, refer to the following page for detailed information:
As a temporary workaround, it is possible to contact system administrator of the remote server to add the affected domain to a whitelist.