231133 - sending SMTP SSL, TLS, and plain text fail on NAT'd IP address on our network

Status: RESOLVED FIXED

(MailNews Core :: Networking: SMTP, defect)

Description

[Jeff Applewhite]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.6) Gecko/20040113
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.6) Gecko/20040113

when sending mail to smtp.duke.edu over TLS, SSL, and plain text in Mozilla 1.5
it worked - now on our network it is broken consistently for all machines that
are on a private NAT'd IP address.  We use a Nortel firewall based on the linux
kernel - but as I said 1.5 works fine.

Traces indicate that the Mozilla client seems to be asking for a SASL 	    
authentication mechanism (EXTERNAL) the server doesn't support.  Oddly, the
server's quite up front about it -- in the EHLO banner, it lists out the
authmechs it can support, but for some reason, Mozilla appears to be ignoring
the list and calling for the EXTERNAL SASL mechanism.

Reproducible: Always

Steps to Reproduce:
1. send mail to smtp.duke.edu on a private IP address - Mozilla 1.5 worked fine

Actual Results:  
send times out

Expected Results:  
sent mail!

Comment 1

[Jo Hermans]

Reporter, can you please attach a log to this bug ? You'll find the instructions
for it at <http://www.mozilla.org/quality/mailnews/mail-troubleshoot.html#smtp>.
Thanks !

Comment 2

[Jeff Applewhite]

Attachment: logs from both Moz 1.5 and 1.6 for smtp problem

Comment 3

[Christian Eyrich]

Argh, what a bug.
Mozilla recognizes the EXTERNAL mechanism from the line
  "250-wilson.acpub.duke.edu Hello fw-external[...]"

Comment 4

[Christian Eyrich]

Attachment: proposed patch

We searched the whol m_responseText for a known authentication mechanism. This
patch changes this to only search the current line responseLine (the line
starting with AUTH in case of authentication mechanisms).

Comment 5

[Jeff Applewhite]

This Bug also seems to affect Firebird.  Will this patch be rolled into it as well?

Comment 6

[Jeff Applewhite]

Thunderbird rather.

Comment 7

[Christian Eyrich]

Yes, this will help both clients.

Comment 8

[David :Bienvenu]

fix checked in.

Comment 9

[timeless]

*** Bug 247112 has been marked as a duplicate of this bug. ***