I can't send e-mail

[Jonathon]

The message could not be sent because one of the
recipients was rejected by the server. The rejected e-mail
address was 'kimberly (e-mail address removed)'. Subject '',
Account: 'pop.central.cox.net',
Server: 'smtp.central.cox.net', Protocol: SMTP, Server
Response: '553 Invalid address syntax', Port: 25, Secure
(SSL): No, Server Error: 553, Error Number: 0x800CCC79

For some reson my e-mail account just stoped letting me
send e-mail, and this is what it keeps telling me when I
trie to send. But it will let me recieve e-mail.

Any tips

 

[Jeff Stephenson [MSFT]]

Well, the particular email address in the error message you list is not
valid - spaces are not allowed in an email address. Check the email
addresses you're sending to.