Login problem with IMP 2.3.7

[Devin Atencio]

I have an account that won't log into 2.3.7 for some
reason. The logs show:

Jul 17 11:51:40 IMP [notice] 207.173.16.36 login success for chandee
{pioneeroutdoor.com:110}
Jul 17 11:51:40 IMP [info] FAILED LOGIN 207.173.16.36 to
pioneeroutdoor.com:110[pop3] as chandee

So it appears that it takes the login then it just fails for some reason. I
am running 2.3.7
as of a couple of days ago and i'm using PEAR from 4.0.6.

Any ideas? I checked the password logging into the POP3 port and it works.

Devin