Hello,
I'm installing courier-imap 4.4.1 + courier-authlib 0.61.0 on Cygwin
1.5.25. Everything goes fine, except that I noticed that LOGIN command in
IMAP server takes 5 sec when logging in as a domain user AND when domain
server *IS NOT* available, whereas it is instantaneous when logging as a
local user.
$ telnet localhost 143
001 login a_local_user password
001 OK LOGIN Ok. <-- immediate reply
$ telnet localhost 143
001 login a_domain_user password
001 OK LOGIN Ok. <-- Reply after 5 sec
I dug into courier-imap/authlib code, and I've located the guilty
instruction. It's a call to setuid(uid) in function libmail_changeuidgid()
of file numlib/changeuidgid.c (package courier-authlib).
changeuidgid.c-41-void libmail_changeuidgid(uid_t uid, gid_t gid)
changeuidgid.c-42-{
changeuidgid.c-43- libmail_changegroup(gid);
changeuidgid.c:44: if ( setuid(uid)) <== GUILTY ONE!
changeuidgid.c-45- {
The problem only occurs when the NT Domain Server *IS NOT* available /
Laptop not connected to the domain network. So this might be due to a
stupid check a-la-windows, like hanging because printer not available,
etc. But I have actually no clue.
An easy fix would be of course to only use local users, but this is not a
very confortable solution. So any help on how to avoid this 5 sec time-out
would be very much appreciated.
Best regards,
Michaël
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