OT - sendmail undying processes

[Steve Campbell]

  I'm using sendmail. Whenever a process gets blocked by either my 
access file rules or a dnsbl, the email gets stopped right away, but the 
process seems to be hanging on for about an hour (indicating "cmd read")

Does anyone know what a good option for this might be in my sendmail 
configuration? I've adjusted most of my parms a long time ago, but 
apparently this one particular option escapes me and isn't redefined.

Thanks for any ideas.

Steve Campbell