- 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 message about failed email delivery to the email account hosted in Plesk:
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.