> > > Eric and I have argued on this point before; but the recent sendmail > > releases are quite efficient and IMHO as or more efficient than > > SMTP+MAILER. > > Sendmail 8.6.x is acceptably fast; it's nowhere near the speed of > MMDF or zmailer on the same hardware. Unfortunately, sendmail > 8.6.x is not what most sites are running -- remember, at least > one major 3-letter vendor is still shipping a non-MX capable > sendmail as the default sendmail binary. Without significant > investment in installing a decent version of sendmail, the > performance of sendmail on most Unix systems is still absolutely > abysmal. IMHO any system which includes a file like sendmail.cf which people can tinker with is severely under-designed. Mail systems should not be tailored. Mail systems should have simple addresses and tailoring should be unnecessary.