I use dovecot-lda to deliver incoming email from Exim to Dovecot.
After having some problems with email bounces with empty envelope sender
not being delivered because of an empty -f argument, I discovered that
Exim can pass email to Dovecot using dovecot-lda without using the -f
argument at all. Would this have any adverse effects anywhere else? The
docs don't even seem to specify if -f is optional or not - but I guess
it is - as it seems to be working without it. Does anybody know what is
its role? I'd like to understand things a bit before I just start
removing it permanently from my setup.
