imap connections from 127.0.0.1
I have two servers on which I have installed ISPConfig3, one not yet updated (still 3.0.3) and the other with a fresh install of 3.0.4.
I followed the howto-tutorial to install both servers.
OS is Debian Squeeze.
Both have domains and e-mail configured on them.
When I look in the logs (generated by logwatch), I see regular connections from public addresses to imap (both on 3.0.3 and on 3.0.4).
But on the server with v3.0.4 I also see lots of connections from 127.0.0.1 (something like over 500 connections from 127.0.0.1 on one e-mail address in the past 3 hours). I know for a fact that this particular user doesn't use imap.
Is this something I should worry about? If this is normal, can somebody give an explanation of what's going on?