I have registered an event sink on my server cscript smtpreg.vbs /add 1 onarrival ScriptA CDO.SS_SMTPOnArrivalSink "rcpt to=EDIData*" this works if someone sends the email to EDIData@mydomain.com however, if they send it to edidata@mydomain.com, the event does not fire. In other words, the rule is case-sensitive, which I really don't want. How can i turn off this case-sensitivity? thanks j