Can recieve but not send

[phantomcomputer]

I keep getting emails returned as undeliverable and a '503 valid RCPT command
must precede DATA' message at the bottom of the returned email.

Has anyone seen this before and figured out what the heck it is?

thank you

 

[Herb Tyson [MVP]]

Take a look here and see if this addresses/solves the problem:

http://support.vervehosting.com/?_a=knowledgebase&_j=questionprint&_i=55