My E-mail Program Cannot Connect to Yahoo Mail

[RobertX]

One day, my computer's e-mail client, Sylpheed, cannot connect to an e-mail server for downloading and sending messages.

I've tried a host of solutions:
- copy the POP3/IMAP4 server information to the letter
- disable my security programs
- switch antiviruses
- access using the web browser, which worked, but that was the only way
- reinstall Sylpheed
- restart the computer

Can't think of many more solutions. Suffice it to say, my system is WIndows 7 Ultimate, so I choose the risk of not being able to have a perfect-fit solution.

The problem came late last night, but is still here.

And yes, ALL mail clients had the same problem. Can it be a virus?

Any pointing to the right direction is appreciated.

[Kingfish]

- copy the POP3/IMAP4 server information to the letter <- you used both?

[SectorVector]

You may also need to enable POP / IMAP for your email a/c.
In case of Gmail, login to your a/c and see under Settings.
For Yahoo / etc check their documentation.

On the client site, ensure you have entered the correct values for the following:
- email address and password
- POP / IMAP server address and port
- SMTP server address and port
- any other authentication related settings.

You could also try using 'telnet' to verify POP / SMTP connection is fine. Hopefully you won't need it.

This is all I can think of. Hope it works out for you.

[RobertX]

Shit, I'm sorry, I pissed myself of as well on this one: the firewall blocked the connection. The firewall is Tinywall.

But this isn't just any firewall; it's a frontend for the Windows 7 Firewall. By design, It blocks a program's connections by default such that you don't need to keep setting it unless you tell it not to.

What I did is to set the firewall into learning mode. In this mode, I "show" the firewall what programs/processes to allow by just doing a certain task (i.e. sending/receiving e-mail messages), and the firewall would unblock any connection involved in the task, and would remember it once I turn the learning mode off.

Works like a charm.

I even forgot I posted something stupid like this here. Again, I'm sorry.

Thanks for the replies, there is nothing to help me with.