[Alpine-info] Can't disable PLAIN for my SMTP server
Benjamin R. Haskell
alpine at benizi.com
Mon Jan 28 00:26:22 PST 2008
On Sun, 27 Jan 2008, Mark Crispin wrote:
> On Sun, 27 Jan 2008, Benjamin R. Haskell wrote:
>> If I don't include PLAIN in the list of disabled authentication schemes, I
>> can't connect to my SMTP server (smtp.andrew.cmu.edu).
> The log that you report fairly clearly identified a bug in the
> smtp.andrew.cmu.edu SMTP server:
>> 220-smtp.andrew.cmu.edu ESMTP Sendmail 8.13.8/8.13.8
>> 220-Mis-identifing the sender of mail is an abuse of computing facilites.
>> 220 ESMTP spoken here
>> EHLO transport
>> 250-smtp.andrew.cmu.edu Hello my.host.name [my.ip.add.ress], pleased to
>> meet you
>> 250-AUTH GSSAPI PLAIN LOGIN
>> 250 HELP
>> AUTH PLAIN
>> call_mailer ERROR: Error sending
> Specifically, this seems to indicate that this server does not support the
> form of the SMTP AUTH command that does not have an initial client response.
Okay. Thanks. Not sure I can do anything about it, but at least I know
what's going wrong.
>> AUTH GSSAPI
>> 501 5.0.0 AUTH aborted
>> mm_log warning: Kerberos error: No credentials cache found (try running
>> kinit) for SMTP.andrew.cmu.edu
>> mm_log babble: Retrying using PLAIN authentication after 501 5.0.0 AUTH
>> AUTH PLAIN
> I think that this may be fixed in the imap-2007a development snapshot:
> Replace the alpine/imap directory with the bits from imap-2007a and rebuild
> Alpine. There is a bug that I fixed in the SMTP client code between
> imap-2007 (which Alpine uses) and imap-2007a which could cause crashes if the
> SMTP server closes the connection during the SMTP authentication procedure.
Sorry. It still happens in Alpine SVN r918 with the imap dir replaced by
imap-2007a.DEV.SNAP-0801171748. Anything else I could provide to aid
More information about the Alpine-info