The virtual domain email address mapping does not seem to work with the red-hat version of sendmail.cf (v8.8.7). specifically Rules S0 and Sparse1. while the mapping (virtusertable): nosuchuser newuser the v8.8.7 sendmail.cf from sendmail.org rules S0 reduces the email address of nosuchuser to newuser in the new domain while the redhat version rules do not. the S0 and Sparse1 (one that accesses the virtusertable) reduces this to nosuchuser which is incorrect. please advise. i would like to use the new sendmail.cf from redhat for the spam prevention rules.. but unfortunately, the virtual domains email addressing does not work. thanx pap.