This server accommodates two large communities (each with their own /16 prefix) and I think I can set up two instances of Qpopper, listening on different IP addresses, should that help. The first instance could then have a certificate for POP.domain1.tld and the second for POP.domain2.tld, or is there a more simple solution ?
That's it. Each certificate should match the name found in reverse DNS. (You need separate IP's for each certificate to do that, of course, but you've satisfied that requirement.)
