The answer, I think, is "yes, kind of".
The goal is to do some filtering for email@example.com.
The solution I see is:
- set up a shell user (firstname.lastname@example.org), which will also create the mailbox "shelluser."
- In the control panel Address page, have mailuser deliver to shelluser. (Alternatively, make "shelluser" the default address for mydomain.com.)
- Set up a mailbox for "mailuser-2971952" (some sequence long enough not to
be guessed by spammers)
- Set up the shelluser procmail file to do all processing for mailuser (and any other accounts)
- After other procmail processing, have mail that was addressed to mailuser delivered to email@example.com
- Set up your email client to check the mailbox for mailuser-2971952 but send outgoing mail from mailuser
Is there an easier way (i.e., a way to edit mailuser's procmail file directly)?