strange mail log entries

[cruz]

I found this in my mail.Nov 3 20:10:30 server1 imapd: LOGOUT, user=web4_u1, ip=[::ffff:127.0.0.1], headers=0, body=0, rcvd=61, sent=166, time=0
Nov 3 20:10:39 server1 imapd: Connection, ip=[::ffff:127.0.0.1]
Nov 3 20:10:39 server1 imapd: LOGIN, user=web4_u1, ip=[::ffff:127.0.0.1], protocol=IMAP
Nov 3 20:10:39 server1 imapd: LOGOUT, user=web4_u1, ip=[::ffff:127.0.0.1], headers=0, body=0, rcvd=61, sent=166, time=0
Nov 3 20:10:43 server1 imapd: Connection, ip=[::ffff:127.0.0.1]
Nov 3 20:10:43 server1 imapd: LOGIN, user=web4_u1, ip=[::ffff:127.0.0.1], protocol=IMAP
Nov 3 20:10:43 server1 imapd: LOGOUT, user=web4_u1, ip=[::ffff:127.0.0.1], headers=0, body=0, rcvd=61, sent=166, time=0
Nov 3 20:10:50 server1 imapd: Connection, ip=[::ffff:127.0.0.1]
Nov 3 20:10:50 server1 imapd: LOGIN, user=web4_u1, ip=[::ffff:127.0.0.1], protocol=IMAP
Nov 3 20:10:50 server1 imapd: LOGOUT, user=web4_u1, ip=[::ffff:127.0.0.1], headers=0, body=0, rcvd=61, sent=166, time=0
Nov 3 20:10:54 server1 imapd: Connection, ip=[::ffff:127.0.0.1]
Nov 3 20:10:54 server1 imapd: LOGIN, user=web4_u1, ip=[::ffff:127.0.0.1], protocol=IMAP
Nov 3 20:10:54 server1 imapd: LOGOUT, user=web4_u1, ip=[::ffff:127.0.0.1], headers=0, body=0, rcvd=77, sent=418, time=0
Nov 3 20:10:56 server1 imapd: Connection, ip=[::ffff:127.0.0.1]
Nov 3 20:10:56 server1 imapd: LOGIN, user=web4_u1, ip=[::ffff:127.0.0.1], protocol=IMAP
Nov 3 20:10:56 server1 imapd: LOGOUT, user=web4_u1, ip=[::ffff:127.0.0.1], headers=0, body=0, rcvd=61, sent=166, time=0
Nov 3 20:11:03 server1 imapd: Connection, ip=[::ffff:127.0.0.1]
Nov 3 20:11:03 server1 imapd: LOGIN, user=web4_u1, ip=[::ffff:127.0.0.1], protocol=IMAP
Nov 3 20:11:03 server1 imapd: LOGOUT, user=web4_u1, ip=[::ffff:127.0.0.1], headers=0, body=0, rcvd=61, sent=166, time=0
Nov 3 20:11:08 server1 imapd: Connection, ip=[::ffff:127.0.0.1]
Nov 3 20:11:08 server1 imapd: LOGIN, user=web4_u1, ip=[::ffff:127.0.0.1], protocol=IMAP
Nov 3 20:11:08 server1 imapd: LOGOUT, user=web4_u1, ip=[::ffff:127.0.0.1], headers=0, body=0, rcvd=61, sent=166, time=0
Nov 3 20:11:11 server1 imapd: Connection, ip=[::ffff:127.0.0.1]
Nov 3 20:11:11 server1 imapd: LOGIN, user=web4_u1, ip=[::ffff:127.0.0.1], protocol=IMAP
Nov 3 20:11:11 server1 imapd: LOGOUT, user=web4_u1, ip=[::ffff:127.0.0.1], headers=0, body=0, rcvd=77, sent=418, time=0
Nov 3 20:11:38 server1 imapd: Connection, ip=[::ffff:127.0.0.1]
Nov 3 20:11:38 server1 imapd: LOGIN, user=web4_u1, ip=[::ffff:127.0.0.1], protocol=IMAP
Nov 3 20:11:38 server1 imapd: LOGOUT, user=web4_u1, ip=[::ffff:127.0.0.1], headers=0, body=0, rcvd=61, sent=166, time=0
Nov 3 20:11:39 server1 imapd: Connection, ip=[::ffff:127.0.0.1]
Nov 3 20:11:39 server1 imapd: LOGIN, user=web4_u1, ip=[::ffff:127.0.0.1], protocol=IMAP
Nov 3 20:11:39 server1 imapd: LOGOUT, user=web4_u1, ip=[::ffff:127.0.0.1], headers=0, body=0, rcvd=61, sent=166, time=0
Nov 3 20:11:40 server1 imapd: Connection, ip=[::ffff:127.0.0.1]
Nov 3 20:11:40 server1 imapd: LOGIN, user=web4_u1, ip=[::ffff:127.0.0.1], protocol=IMAP
Nov 3 20:11:40 server1 imapd: LOGOUT, user=web4_u1, ip=[::ffff:127.0.0.1], headers=0, body=0, rcvd=77, sent=418, time=0
Nov 3 20:11:50 server1 imapd: Connection, ip=[::ffff:127.0.0.1]
Nov 3 20:11:50 server1 imapd: LOGIN, user=web4_u1, ip=[::ffff:127.0.0.1], protocol=IMAP
Nov 3 20:11:50 server1 imapd: LOGOUT, user=web4_u1, ip=[::ffff:127.0.0.1], headers=0, body=0, rcvd=61, sent=166, time=0
Is thsi normal activity? What is it trying to do? It looks like it is sending somthing out.

[till]

These entries appear if someone uses a webmail application like squirrelmail. This is nothing to worry about.