disable sending emails

[guanaco]

I have tried to look on your forum for this with no luck. I know that there is a way to disable receiving emails with ISPConfig but would it be possible to disable sending? I want some accounts to be able to only receive emails.

Thank you for your help

[edge]

One way of doing this is by adding the following to /etc/postfix/header_checks

/^From: .*@XYZ\.TLD>/ DISCARD

This will stop any email from domain xyz.tld to be send.
Make sure that you restart postfix after adding this.

[guanaco]

the code doesnt seems to do anything.

I added the line to the header_checks file and restarted postfix but I can still send email locally and externally. Any other way to do this?

[edge]

Make sure that "/etc/postfix/header_checks" is included in your "/etc/postfix/main.cf" like this.

header_checks = regexp:/etc/postfix/header_checks