My logwatch daily email keeps getting flooded with lots or unmatched entries which all look legitimate like this;
**Unmatched Entries**
dovecot: service=imap,
[email protected], ip=[51.51.51.51]. Logged out rcvd=297, sent=1103: 1 Time(s)
...
dovecot: service=lda,
[email protected], ip=[]...