vchkpw-submission is on port 587, and is typically used for emai clients relaying mail. It's often set up to require authentication.
vchkpw-smtp is on port 25, and can be used for email clients to relay mail, or by other servers delivering mail to your server. -Tom On Mar 4, 2014, at 9:41 PM, LHTek wrote: > In the /var/log/maillog file what is the difference between these 2 entries > (vchkpw-submission, vchkpw-smtp)? > > example: > Mar 4 17:27:03 michael vpopmail[14701]: vchkpw-submission: (PLAIN) login > success t...@domain.com:64.185.3.238 > Mar 4 10:54:42 michael vpopmail[29027]: vchkpw-smtp: (PLAIN) login success > t...@domain.com:64.57.239.114 > > > !DSPAM:5316bde734268482773211!