ok, i give up. i've been able to send mail for the past several days but can't receive. telnet to port 25 brings up a banner but no clue where mail ends up. also, i've had to recreate the certificate 3 times since the install (a week ago). suggestions on which logs to review? i've checked the var/log/zimbra.log and opt/log/zimbra.log. the var log indicated the issue with the cert but i can't see why mail doesn't hit the maibox.