Public bug reported:
I am running trusty. After the update from 1:31.7.0+build1 to 1:31.8.0+build1 i
suddenly was no longer able to send mail via my provider.
The mail server is running exim and uses STARTTLS for connection encryption.
When hitting the send button, Thunderbird informed me that it is connecting to
the mail server, immediately followed by a popup informing me that sending
failed due to an "unknown error" and that I should talk to my network admin.
I then made sure they had not changed anything in the exim server config
(for quite some time actually). When I tried to send mail, the server
would just have an entry in its log like this:
2015-08-30 15:35:04 TLS error on connection from (my.host.some.where)
[176.198.xxx.yyy] (gnutls_handshake): A TLS packet with unexpected
length was received.
Sending mail from Android or with Evolution still works.
I then grabbed a backup and downgraded thunderbird to the previous
version 1:31.7.0+build1. The problem went away immediately.
A simple test using
#> openssl s_client -connect mail.my.provider.com:25 -starttls smtp
does not exhibit anything uncommon, the handshake goes through without a
hickup.
Since thunderbird is not totally uncommon (although noone else seems to
have complained yet), I could arrange a test login for anyone willing to
run an investigation on the issue. I just don't want to publish server
names or IPs here.
** Affects: thunderbird (Ubuntu)
Importance: Undecided
Status: New
** Description changed:
+ I am running trusty. After the update from 1:31.7.0+build1 to 1:31.8.0+build1
i suddenly was no longer able to send mail via my provider.
+ The mail server is running exim and uses STARTTLS for connection encryption.
When hitting the send button, Thunderbird informed me that it is connecting to
the mail server, immediately followed by a popup informing me that sending
failed due to an "unknown error" and that I should talk to my network admin.
- I am running trusty. After the update from 1:31.7.0+build1 to 1:31.8.0+build1
i suddenly was no longer able to send mail via my provider.
- The mail server is running exim and uses STARTTLS for connection encryption.
When hitting the send button, Thunderbird informed me that it is connecting to
the mail server, immediately followed that sending failed due to an "unknown
error" and that I should talk to my network admin.
-
- I then made sure they had not changed anything in the exim config (for
- quite some time). Also, doing a STARTTLS handshake with When I tried to
- send mail, the server would just have an entry in its log like this:
+ I then made sure they had not changed anything in the exim server config
+ (for quite some time actually). When I tried to send mail, the server
+ would just have an entry in its log like this:
2015-08-30 15:35:04 TLS error on connection from (my.host.some.where)
[176.198.xxx.yyy] (gnutls_handshake): A TLS packet with unexpected
length was received.
+
+ Sending mail from Android or with Evolution still works.
I then grabbed a backup and downgraded thunderbird to the previous
version 1:31.7.0+build1. The problem went away immediately.
A simple test using
#> openssl s_client -connect mail.my.provider.com:25 -starttls smtp
does not exhibit anything uncommon, the handshake goes through without a
hickup.
Since thunderbird is not totally uncommon (although noone else seems to
have complained yet), I could arrange a test login for anyone willing to
run an investigation on the issue. I just don't want to publish server
names or IPs here.
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Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1490293
Title:
STARTTLS Handshake problem introduced in 1:31.8.0+build1
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