Using special delimiters, it is possible to trick the SMTP service into relaying:RCPT TO:[EMAIL PROTECTED] <<< 250 ok its for [EMAIL PROTECTED] DATA <<< 354 ok, send it; end with <CRLF>.<CRLF> (message body) Is there any way to prevent this by changing the default delimiters?Yes, I checked the KB: http://support.ipswitch.com/kb/IM-19980204-DM01.htmWhen I changed this setting, the SMTP service still relayed for these addresses.Any comments?Marius
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