Interoperability issue with The Bat (Debian Bug #316522)
mh+gnutls-devel at zugschlus.de
Thu Jan 3 01:24:58 CET 2008
Simon Josefsson has suggested to me (a member of the maintainer team
for Exim's packages for the Debian Operating System) that it might be
a good idea to move a technical debate from our blogs
to gnutls-devel as this list is a better medium for archived discussion.
I'll send a dedicated mail for each of Debian's bug reports, so that
the threads are not going to intermix.
Debian Bug #316522, http://bugs.debian.org/316522
> When the email client TheBat talks with exim4 4.50-8, gnutls (in
> exim4) will log (gnutls_handshake): An error was encountered at the
> TLS Finished packet calculation. Other clients than TheBat reportedly
> works. An older version of Exim4, specifically 4.32-2, worked though.
> It is unclear whether the version of GnuTLS changed when exim4 was
> upgraded from 4.32-2 to 4.50-8.
Unfortunately, I wasn't able to find out which GnuTLS library exim4
4.32-2 was compiled against since snapshot.debian.net is incomplete
here. 4.32-4 was built for Debian on April 26, 2004.
Exim 4.50-8 in Debian has a binary depends on libgnutls11 (>= 1.0.16).
> There is no discussion of whether changing to OpenSSL would solve the
> problem. Conclusion: The problem with TheBat warrants debugging.
> However, this do not seem to be a widely reported problem. Further,
> TheBat is not free software so we cannot help debug it. Questions:
> The reported said earlier versions worked, which GnuTLS versions was
> this? Can the problem be pin-pointed to a specific GnuTLS release or
> Exim4 release? Does the problem go away with OpenSSL?
Can you ask these questions to the submitter on the BTS?
It might be possible (judging from
https://www.ritlabs.com/bt/view.php?id=5785) that The Bat by default
refuses to talk TLS to a server presenting a self-signed certificate.
Marc Haber | "I don't trust Computers. They | Mailadresse im Header
Mannheim, Germany | lose things." Winona Ryder | Fon: *49 621 72739834
Nordisch by Nature | How to make an American Quilt | Fax: *49 3221 2323190
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