Email sending issue

Computer 1 - When I send email it doesnt show up as sent and is never received Computer 2 - Shows email as sent but doesnt receive Both computers imap/smtp are same Computer 2 has 7.2.37929.0 version Computer 1 runs 7.2.38715.0 and will not update Any ideas ? Thanks

Is this happening with a specific recipient address, or with all messages?

Who is the email provider?