phpmailer stop working server wide.

phpmailer has stop working in the whole server for many clients.

this is a sample of the exim_mainlog, only changed the real sending and receiving account.
Just changing the sending script in one client to use an account in another server and everything works. Its only a server issue and not a script issue (it was working, stop working for more than 1 client, and it works w an account in a different server)


2011-02-11 14:32:57 H=server3.dinamichosting.com (sendingaccount.com) [174.133.123.26] Warning: Sender rate 3.2 / 1h

2011-02-11 14:32:57 H=server3.dinamichosting.com (sendingaccount.com) [174.133.123.26] F=<test@sendingaccount.com> rejected RCPT <receivingaccount@hotmail.com>: server3.dinamichosting.com (sendingaccount.com) [174.133.123.26] is currently not permitted to relay through this server. Perhaps you have not logged into the pop/imap server in the last 30 minutes or do not have SMTP Authentication turned on in your email client.

2011-02-11 14:33:01 dovecot_login authenticator failed for server3.dinamichosting.com (sendingaccount.com) [174.133.123.26]: 535 Incorrect authentication data (set_id=test@sendingaccount.com)