system
4
Here are your port#s with their Keyword and Description with mine below.
I am no expert in this area but your 587 looks kind of strange. I am not so sure about the 80 either. Then again like I said I am not expert in this area 
Keyword--Decimal---Description
----------------------------------------------------
smtp 25/udp Simple Mail Transfer
http 80/tcp World Wide Web HTTP
http 80/udp World Wide Web HTTP
www 80/tcp World Wide Web HTTP
www 80/udp World Wide Web HTTP
www-http 80/tcp World Wide Web HTTP
www-http 80/udp World Wide Web HTTP
# Tim Berners-Lee
http 80/sctp HTTP
# IETF TSVWG
submission 587/tcp Submission
submission 587/udp Submission
# [RFC4409]
==============================================
smtp 25/udp Simple Mail Transfer
pop3 110/tcp Post Office Protocol - Version 3
pop3 110/udp Post Office Protocol - Version 3
imap 143/tcp Internet Message Access Protocol
imap 143/udp Internet Message Access Protocol
Try looking at this link and see if it will help
[size=10pt][b]Password not remembered - Thunderbird[/b][/size]
http://kb.mozillazine.org/Password_not_remembered_(Thunderbird)