smtp error

Ariën Huisken <[email protected]> Thu, 05 Apr 2007 11:58:46 +0200

Newsgroups	gmane.linux.trustix.general
Message-ID	<[email protected]>

Hi list,

I try to send an email messages to someone, but I get the following error:

<[email protected]>: host mail.example.com[11.11.11.11] said: 550 5.7.1 Phrase
     in email not acceptable (in reply to end of DATA command)

Does anyone know what this error means?

Thanks,

Arien