277450 - Cannot successfully send email via non-standard SMTP port 587 (even though Outlook Express 6 can)

Status: RESOLVED INVALID

(Thunderbird :: General, defect)

Description

[John Charlesworth]

Repeatable: Always

Severity: Critical; prevents sending of any mail

Description:
We use two different connectivity providers.  One provider has blocked traffic
on port 25 to stop email-relaying.

Our web host (which is separate from the connectivity provider) has made
unencrypted SMTP available on both port 25 (which is blocked by this one
provider) and port 587 (which Thunderbird does not seem to like).

Outlook Express v6 (!) can send email from this computer via port 587. 
Thunderbird cannot -- it keeps asking for a password (even after the correct one
is entered).

Thunderbird *can* send email via port 25 from this computer (when we use the
other connectivity provider).  Just not via port 587.

There is only one Account set up in Thunderbird so it is not a multiple account
issue.

Encryption (SSL etc) is turned off.

Comment 1

[Matthias Versen [:Matti]]

no dataloss/crash = not critical

Please provide a smtp log :
http://www.mozilla.org/quality/mailnews/mail-troubleshoot.html

Comment 2

[Matthias Versen [:Matti]]

no response