- Plesk for Linux
Unable to send email messages on a Plesk server with the following error in webmail interface:
SMTP Error: Message size exceeds server limit
Unable to receive an email with attachments bigger than, for example, 30 MB.
The sender receives the following mail message about failed email delivery:
552 5.3.4 Message size exceeds fixed limit
Final-Recipient: rfc822; firstname.lastname@example.org
Remote-MTA: dns; mail.example.com. (203.0.113.2, the server for the domain example.com.)
Diagnostic-Code: smtp; 552 5.3.4 Message size exceeds fixed limit
The size of the message exceeds available server-wide limits configured in Tools & Settings > Mail Server Settings > Maximum message size value.
- Log into Plesk.
- Increase the Maximum message size value in Tools & Settings > Mail Server Settings:
- Scroll down and press the OK button to apply the changes.