Email Domain Webmail Setup Request Timed out

I am trying to setup my webmail email account on the email domain and I keep getting a Request Timed Out Error

@ian-mungai share some screenshots

Experiencing the same issue as of today.

I was finally able to resolve the problem by attempting a different config:

… even though the e-mail server provider clearly indicated using SSL on port 465 for SMTP, the correct configuration was to use TLS on port 587. Go figure. Hopefully this can save someone else a couple of hours of trial-and-error.