No problem! Only wish I could use it myself, but I can't modify an exim edge mta to my liking
So in wrap-up, the final solution to add recipient_delimiter + 'plus addressing' to send an email to you+random@domain.com and still get it at you@domain.com is:
Code:
su zimbra
zmprov mcf zimbraMtaRecipientDelimiter +
zmcontrol stop
zmcontrol start
(some might have luck with just 'postfix reload' instead of a full reboot-but you might as well do the whole reboot)
This could be duplicated with any 'standard' symbol such as '-'
If I could use this solution myself...I would personally setup '-' to automatically tag/folder an incoming email.
So if I send something to myself
me-stuffforfirewall@domain.com it would file/tag with stuffforfirewall.
And '+' which is common to most systems, would be for signing up for something say at
me+amazon@domain.com
Then when I start getting junk from sites I can see who they sell my email to/who leaked it, or filter to trash/junk.