Hi CerveloJohn and welcome to the CrackBerry community !
The most probable cause of this is a problem with the SMTP (outgoing) server.
Before we go further, could you please detail :
- What type of email ist it (POP, IMAP, Exchange ... ) ?
- Is it on an ISP domain (e.g a cable/DSL operator, like
yourname@myISP.com) ?
- If previous answer is yes : is your carrier (mobile) the same as your ISP ?
Last but not least, can you go into settings/accounts and detail the outgoing server (SMTP) settings ?