[imp] horde-alarm: PHP ERROR: Undefined index: password

[Per olof Ljungmark]

Hi,

Wonder if someone perhaps could hint why we see this every time 
horde-alarms is run.

Horde 4.0.15
imp 5.0.23

No problems with reading mail or anything else for that matter, alarms 
works as well. Auth is LDAP. The user named (admin below) is always the 
first from $conf[auth][admins] and it does not matter if the this user 
is changed.

There are no errors in the LDAP server log, but IMP is not perfectly 
happy. Why does horde-alarms want IMP to login to our IMAP server? Is it 
a config error, a bug or just noise?

Oct  2 21:10:01 webmail HORDE: [imp] PHP ERROR: Undefined index: 
password [pid 37466 on line 174 of 
"/usr/local/share/pear/Horde/Imap/Client/Base.php"]
Oct  2 21:10:07 webmail HORDE: [imp] Mail server denied authentication. 
[pid 37466 on line 345 of "/usr/local/www/horde/imp/lib/Imap.php"]
Oct  2 21:10:07 webmail HORDE: [imp] FAILED LOGIN for admin (Horde user 
admin) [] to {10.10.10.1:143 [imap]} [pid 37466 on line 176 of 
"/usr/local/www/horde/imp/lib/Auth.php"]

Ideas?