135658 - 'Unknow' pop server response may mozilla-mail bring into an endless-loop

Status: RESOLVED INVALID

(MailNews Core :: Networking: POP, defect)

Description

[Adrian Ulrich]

This bug may be a bit difficult to reproduce..

I have a pop3 mailbox and i can also access this mailbox via browser under the
url webmail.webspace4you.ch .. its a product called 'VOPmail'

The problem:
1) Login with the HTML Frontend (vopmail)
2) Now try to retrive your mails via mozilla mail (same mailbox, while you are
logged in)
Mozilla recives a message that it doesn't understand and it will try again,
again, again..

here a telnet log:

ulrich@oma:~$ telnet pop3.blinkenlights.ch 110
Trying 212.80.184.4...
Connected to pop3.blinkenlights.ch.
Escape character is '^]'.
+OK VOPmail POP3 Server-NOTF 5.0.194.0 Ready <[e-mail]>

user [e-mail]
+OK [e-mail] is welcome here
pass blabla
-ERR mailbox in use

..and 'mailbox in use' isn't understood by mozilla mail :)

Comment 1

[Jason M. Abels]

Reporter: can you confirm this still happens on a modern build of mozilla?

Comment 2

[Christian Eyrich]

> -ERR mailbox in use
> 
> ..and 'mailbox in use' isn't understood by mozilla mail :)

Of course. POP3 protcol only knows -ERR and +OK. The text after these codes is
just informative and shouldn't be parsed. To submit further informations
extended codes have been created in RFC 2449 and 3206.

The problem is, that these extended codes are not mandatory and therefore not
wide spread. A server that wants to be understood should send
-ERR [IN-USE] mailbox in use.
Mozillas newer than 2003-07-13 are aware of this code.