I know, I know, posting to both lists? But, tinydns made this
easy and qmail is the list in question, so...
I was just watching the tinydns logs when I mailed a message to
the qmail mailing list.
All of a sudden the query rate on my reply-address domain shot up as
the log tail slid across the screen. It occurred to me that a lot of
those queries are probably doing reverse lookups or anti-spam
checks ensuring a valid reply domain.
The reason I'm pointing this out is that I find it interesting
that it indirectly exposes some domains which are likely to be
subscribed to the list.
Regards.
