I’m doing some things with qmail, which is boasted as “the second most popular MTA on the Internet,” and I was curious to see how popular different MTA’s were, based on posted job requirements at Monster.com. “Percentage of Internet email delivered” isn’t the same as “what employers are willing to pay you to do.”
This is just from a quick all jobs/locations search on monster.com, and includes MTA’s and mailing list managers, from off the top of my head.
> 1000 — Exchange
> 1000 — Lotus Notes
209 — Sendmail
190 — Groupwise
68 — Postfix
37 — qmail
12 — LISTSERV
10 — exim
2 — MDaemon
1 — Courier MTA
1 — majordomo
1 — mmdf
0 — smail
0 — ListProc