Matti et al, I'm attempting to run 2.99.50-s10 on an AIX 4.1 system, and the router is reporting "Malformed recipient privilege data!" and dumping the mail into POSTOFFICE/deferred. I see this problem mentioned in the archives but no resolution? I do have a zmailer group in /etc/group. Any advice is much appreciated. I am desperate for the anti-relay features... Jim