Public bug reported:
This issue is reproducible on Ubuntu 10.10, 11.10 and 12.10.
When connecting to mailroot3.namespro.ca using IMAPS (SSL), the client
will progress some way through opening a large mailbox, typically
receiving between zero and a few thousand headers, before it hangs in
recv(). The issue is reliably reproducible on a mailbox containing ~2600
messages.
This issue only occurs when using TLSv1 to connect. Disabling TLSv1 in
muttrc (presumably falling back to SSLv3) or using cleartext IMAP both
avoid this issue.
Wireshark shows that the most recent data exchange was from the server
to the client.
Running nmap(1) suggests the remote mail server is "MailEnable imapd."
(Note, in the attached trace, a connection is being proxied through an
SSH tunnel, so the outgoing connection will appear to go to
localhost:9993. This issue occurs with a direct connection as well.)
ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: mutt 1.5.21-6
ProcVersionSignature: Ubuntu 3.5.0-25.39-generic 3.5.7.4
Uname: Linux 3.5.0-25-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.6.1-0ubuntu10
Architecture: amd64
Date: Sat Mar 16 01:12:15 2013
ExecutablePath: /usr/bin/mutt-org
InstallationDate: Installed on 2013-03-12 (3 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
MarkForUpload: True
SourcePackage: mutt
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: gnutls26 (Ubuntu)
Importance: Undecided
Status: New
** Affects: mutt (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug quantal running-unity
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https://bugs.launchpad.net/bugs/1155879
Title:
Freeze when connecting to MailEnable imapd with mutt
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