MDaemon 11.x: Too Many Recipients error (452)
My users get a '452 - too many recipients' error when sending to more than 100 users.
By default, MDaemon sets a limit of 100 recipients per message received via SMTP. This is the minimum number of recipients per message that the RFC (Internet standards) suggests accepting.
If you would like to change this setting, open the MDaemon console:
- Click the Setup menu
- Click Default Domain/ Servers
- Select Servers on the left pane
- Edit the value beside ...allows only this many RCPT field
- Click OK
This article refers to MDaemon 11.x and above. For information on how to resolve this in previous versions, please see the link below.
KBA-01699 Too Many Recipients error (452) (MDaemon 9.x and below)