Plesk for Linux
kb: technical
ABT: Group A
Applicable to:
- Plesk for Linux
Symptoms
-
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; johndoe@example.com
Action: failed
Status: 5.3.4
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
Cause
The size of the message exceeds available server-wide limits configured in Tools & Settings > Mail Server Settings > Maximum message size value.
Resolution
- 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.
Comments
6 comments
Hello,
I tried to change this parameter but I'm still having this problem. What else could I try? Maybe do I have to reboot any service after change?
This is my situation:
I can't figure how to solve this issue.
Thank you,
Silvio
Hello @Silvio Fei,
The "Maximum message size" directive at the "Plesk > Tools & Settings > Mail Server Settings" page changes the "message_size_limit" in the Postfix file:
Switching this value in Plesk reload/restart all required services - you can see it in the "/var/log/messages" file:
So, no additional actions are required here
Maybe an email you try to send still exceeds the limits you set up? Try to increase them even more
Hi Nikita,
I tried your solution and now this is the situation:
# cat /etc/postfix/main.cf | grep -i message_size_limit
message_size_limit = 35840000
then I run this command:
sudo service postfix restart
But I still have limit error when I try to attach 10Mb file within roundcube client.
There is anything else I can try?
P.S. For next time... how do you format blockquote in this ticket system? :P
@Silvio Fei
You have mentioned that "Roundcube says limit is set to 32 MB", do you mean this parameter?
Check the /var/log/maillog, it may contain the more detailed errors, and if it does - try to search for other KB articles using these error.
If you still cannot figure out the reason for such beahviour, feel free to submit a request to support as per https://support.plesk.com/hc/en-us/articles/213608509-How-to-submit-a-request-to-Plesk-support-
> how do you format blockquote in this ticket system?
When you writing a comment here, there is a small paragraph icon on the top left of the comment editor, press it and select the "code" style :)
Hi everybody, can someone help me with "Message size", I'm going to up the size but I can't, I already read the similar topics but no result, I still getting:
@Shokhrukh
If none of the suggestions, mentioned in this thread, helped, I suggest contacting regular Plesk support for further assistance.
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