I've read all the other posts about qmail misbehaving, and haven't found one that helps me out. After I upgraded to 7.5.4, I cannot send or receive mail. Here's what I tried so far: 1. Tried to telnet to port 25. Connection refused. 2. Tried stopping qmail in the CP. The CP icons do not show the service as stopped. Tried restart. Still no connection. 3. Checked ps -ax | grep qmail to see if it was running. Not sure what the result means, but through comparison with results in another post, it seems to be running. 4. Tried stopping qmail from the command line. Still shows up as running in Plesk. 5. Tried reinstalling qmail. Still SMTP connection refused. Same problems. I'm out of ideas. What else can I try?