[imp] Custom Login handler?

[Michael W. Jones]

Has anyone been able to get the custom_login.php handler to work in Imp
4/Horde 3?
 
I set the URL in the configuration to "scripts/custom_login.php" (currently
testing just the basic version, will overlay actual custom page once
working), and I have Horde set to authenticate via IMP.
 
I end up with a stream of 302 "Temporarily redirected" messages in the log,
before getting a 404 not found message:
 
"GET /horde/ HTTP/1.1" 302 26
"GET /horde/login.php?Horde=a27b6fd665b8b0ecd0c8f65b176ce208 HTTP/1.1" 302
26
"GET /horde/imp/login.php HTTP/1.1" 302 26
"GET /horde/imp/scripts/custom_login.php HTTP/1.1" 302 -
"GET
/horde/login.php?url=%2Fhorde%2Fimp%2Fscripts%2Fcustom_login.php%3Fnocache%D
jy9wp2kgxfk HTTP/1.1" 302 26
"GET
/horde/imp/login.php?url=%2Fhorde%2Fimp%2Fscripts%2Fcustom_login.php%3Fnocac
he%3Djy9wp2kgxfk HTTP/1.1" 302 26
"GET /horde/imp/scripts/custom_login.php HTTP/1.1" 302 -
"GET
/horde/login.php?url=%2Fhorde%2Fimp%2Fscripts%2Fcustom_login.php%3Fnocache%3
D4x0v6ezi9mrk HTTP/1.1" 302 26
"GET
/horde/imp/login.php?url=%2Fhorde%2Fimp%2Fscripts%2Fcustom_login.php%3Fnocac
he%3D4x0v6ezi9mrk HTTP/1.1" 302 26
[extra logs cut, but it continues in this loop]
 
It looks like it's caught in a loop, but I haven't been able to pinpoint
what's causing it.
 
Any ideas?
 
Mike Jones
Houston, Texas