Les Mikesell wrote:
Sendmail + MimeDefang is probably the most efficient combination but spamassassin is the real resource hog wherever it runs.
No disagreement there. It *is* the most problematic and time consuming portion of my entire SMTP application. ~5 seconds is about the average time to scan an email. Spamassasin's also susceptible to it's bayesian filter databases becoming corrupted, which causes untold havoc until you rebuild them with a two huge directories full of alternatively SPAM and HAM.
Peter