[Exim] OT - cpmta, what's that ?

hi,

sorry for being off, i've tried searching google but apparently due to
archivers archiving mail headers i didn't get too far ;)

anyone by chance knows what mta "cpmta" is ? it adds a received: line
like ``Received: (cpmta 17571 invoked from network); 15 Apr 2003
07:56:33 -0700'', which, judging from "invoked from network" smells
badly like qmail to me, though the owner of the machine is said to say
he doesn't have qmail.

a friend of mine has severe problems with a multidrop mailbox and i'm
trying to help him trace it, but since i can't even find cpmta's home
nor anything else about it, i'm kinda stuck.

(btw, the fundamental problem is that it adds two Delivered-To:
headers, one looking good, the other (later added one) looks like
"Delivered-To: domain%poplogin@domain", which, because of "poplogin"
not being the original recipient, screws the whole thing up).

if anyone has any pointers, i'd appreciate it in private mail.

thanks,

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... and the rest is silence.