On Wed, 8 Dec 2004, Tom Collins wrote:

On Dec 8, 2004, at 8:04 AM, Pedro Pais wrote:
When a user tries to authenticate itself, the first time vchkpw fails with:

"Dec  6 21:50:08 [vpopmail] vchkpw-smtp: password fail"

but then it succeeds immediatly after:

"Dec  6 21:50:13 [vpopmail] vchkpw-smtp: (PLAIN) login success"

This is very annoying, besides the fact that this only happens with
Thunderbird, with other e-mail clients they give an error message and
the connection is terminated. Is there any way to solve this thing?

It looks like the client is trying CRAM-MD5, failing, and then using PLAIN authentication.

You probably have an older patch, or a version problem between the smtp-auth patch and vpopmail. The older patch sent the information in the incorrect order, and vpopmail was written to accept it in that order. We fixed vpopmail for the 5.4.0 release, but it required updating to the correct SMTP AUTH patch.

Also, I'm fairly certain that CRAM-MD5 requires that you have clear-text passwords enabled. I still need to look at my pop and smtp servers to see how I can make them not advertise something that's not available on my system...


If you're using vpopmail 5.4.0 and later, make sure you're using an up-to-date patch that passes the MD5 challenge and response in the correct order. The patch in vpopmail's contrib directory works properly.

Tom Collins  -  [EMAIL PROTECTED]
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