I get an error when I send an email

Q: I get an error when I send an email. 

A: 

1) Make sure you are sending an email from a domain that we set up for your account.
Example: You can send an email from Rabbi@chabadmytown.com but not from rabbiy@gmail.com or rabbiy@yahoo.com

2) If this is your first time sending an email, it is likely your domain is still being verified and is not ready for sending.