> > I'm using spamassassin with sendmail via spamass-milter. Many users are > using Open Webmail to read mail, and sometimes when they try to send, the > system hangs for 10+ seconds. Often it sends immediately however. >
You are scanning outgoing messages. Is this really a requirement? If not, You could use other glue than milter for SpamAssassin, namely procmail or maildrop (whichever is used by your MTA), which processes only incoming stuff.
