I've just tested our mail server with www.abuse.net/relay.htm
and on test 8 it appears to fail. >>> RSET <<< 250 2.0.0 Resetting >>> MAIL FROM:<[EMAIL PROTECTED]> <<< 250 2.1.0 [EMAIL PROTECTED] OK >>> RCPT TO:<"[EMAIL PROTECTED]"> <<< 250 2.1.5 "[EMAIL PROTECTED]"@kingswinford.dudley.sch.uk Although our server doesn't relay the message it accepts it and generates an NDR, our ISP is refusing to allow us access to their smtp & pop3 servers until this is closed. How do I solve this one in Exchange 2000 Thanks Stu List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm