- Plesk 12.5 for Linux
How to restrict SMTP a certain email address so that it can only send internal emails but not outgoing emails?
This functionality is not supported in Plesk at the moment. You may want to suggest new functionality in Plesk on Plesk User Voice portal.
The top-ranked suggestions are likely to be included in the next versions of Plesk. You can get the information about the updates in our products in the following public sources:
https://partners.plesk.com/ - public roadmaps for partners;
http://kb.plesk.com/subscriptions/index.html - knowledge base, each product update comes with corresponding KB article;
http://kb.plesk.com/rss/?p=PLESK - RSS feeds
It is possible to totally disable mail functionality for a certain domain. All mailboxes on a domain will not have SMTP function:
Go to Plesk > Domains > example.com > Customize > PHP settings > Additional configuration directives
Add the following additional directives:
disable_functions = mail
safe_mode = on
Make sure that you locked the corresponding subscription, otherwise the global definitions of that subscription plan will be synced and domain's specific configuration will be lost.