We have a problem where any time we are not at home connected to our Shaw internet we cannot sent email through the email app on our devices.  We have 4 different devices affected - 2 Samsung phones, Samsung tablet and iPad.  Can send receive email without problem when at home on shaw home wifi, but if we are on data or on different internet provider, emails sent from our shaw email accounts get sent to the Outbox .  Error message says there is a problem connecting to the server and message will be sent as soon as connection is restored.

Do not have the error or any problem if I am sending a gmail account 

Shaw support says not their problem, and I should just use webmail.

Wondering if others have had this issue