I searched the mail archive and found out why the log file was empty. I added the -v to the smtpd/run script and the log is now growing. On the server, there are a bunch of running smtpd processes:
21728 ? S 0:00 /var/qmail/bin/qmail-smtpd mail2.smartsite.net /home/vpopmail/bin/vchkpw /bin/true
there are about 20 of these processes. the var/log/qmail/smtpd/current file loks like:
@400000003fe135d52844b54c tcpserver: pid 22727 from 66.218.86.99 @400000003fe135d5284a5e84 tcpserver: ok 22727 0:64.186.170.70:25 :66.218.86.99::41417 @400000003fe135d534ca88b4 tcpserver: end 22727 status 0 @400000003fe135d534caafc4 tcpserver: status: 19/20 @400000003fe135d534ccc304 tcpserver: status: 20/20 @400000003fe135d534da4024 tcpserver: pid 22729 from 131.202.3.20 @400000003fe135d534de85e4 tcpserver: ok 22729 0:64.186.170.70:25 :131.202.3.20::33911
a small number of messages to seem to be getting out, but basically none of my users can send.
Looks like your concurrency is maxed. Try increasing your /var/qmail/control/concurrencyincoming to 50 and restart qmail-smtpd.
Regards,
Bill
