This one's got me mighty stumped, so I'm turning to the Shaw community for help. I'm trying to help my mom with her MacBook Pro (2019) which is running Catalina, and she is using Mac Mail to get her mail. She has an IMAP account, and the incoming is setup fine. Username and password checks out OK, port is good at 993, SSL is turned on, and authenticate via Password is turned on too. I have tried to change the outgoing mail using the Shaw server settings per IMAP setup, but it won't accept the user name or password or any of that, and I can't verify the setting for outgoing mail, and when I do it says something about only being allowed to have one SMTP account... I spoke with a nice lady from techical support, and we verified that the password and username was good, and with Shaw webmail it worked fine.  She explained to me that Shaw doesn't support Mac, which was a given...... She suggested I call Apple for support, which is understandable, as this is  a Mac after all..... So.....I suspect that there's a bug in Mac Mail or Catalina itself, but I'm mighty stumped.  I've also tried to set up her iPhone with all the correct settings as per Shaw's instructions, and the same thing happens........

thanks for any help, suggestions, tips etc

John B