- Plesk Onyx for Windows
- Plesk for Windows
Unable to send emails from a domain
example.comto a domain
example.org. Messages are bounced back with the following error:
CONFIG_TEXT: Recipient: [SMTP:email@example.com]
Reason: 551 This mail server requires authentication before sending mail from a locally hosted domain. Please reconfigure your mail client to authenticate before sending mail.
- Globally sender's domain
example.comresolves to 203.0.113.2 and receiver's domain
example.orgresolves to 203.0.113.4:
C:\> dig example.com +short
C:\> dig example.org +short
However, when checking
example.comon the destination DNS server, the sender's domain IP address resolves to receiver's domain IP address:
C:\> dig example.com @203.0.113.4 +short
The sender's domain
exists on the destination server and is considered as a local domain.
should be deleted from the receiving mail server. Contact system administrator of the receiving mail server.