I'm trying to set up Thunderbird (IMAP) with my Shaw email, but it doesn't seem to be working right. It's receiving emails fine, but if I try to send any, I get an error message saying that it timed out. I used the settings listed on the site, listed below, so I'm not sure what the issue could be. Any input would be gratefully received.

Settings I used:

Account Type: IMAP
Username: Your Shaw email address without @shaw.ca
Password: Your Shaw email password
Email address: Your Shaw email address
Incoming Server Name: imap.shaw.ca
Incoming Server Security Type: SSL (SSL/TLS option in Thunderbird)
Incoming Server Port: 993
Outgoing Server Name: mail.shaw.ca
Outgoing Server Security Type: TLS (SSL/TLS option in Thunderbird)
Outgoing Server Port: 587

Thunderbird did automatically try to set the outgoing port as 465, so I tried that as well, and that too failed.

I'm using Windows 10 on a laptop, for reference.