Hi there everyone, first post here. I've got an openSUSE 12.2 x64 server I've set up according to the "perfect" guide found at the link below: Link We're using Roundcube, postfix, apache2, dovecot and ISPConfig 3. Basically what I'm trying to accomplish is to be able to only send and receive mail from email addresses/domains that are on our whitelist. So essentially, blacklist everything and only allow whitelist to send to/from. I've been trying to accomplish this through ispconfig but I can't seem to achieve the results I'm looking for. Hopefully there is an easy wildcard configuration that I can do which will allow me to accomplish this. I've tried various wildcards but none of them have actually stopped the email from getting into the test inbox. Some of the things I've tried: *@* @* *@*.* * None have worked for me. Ideally I would like to be able to manage the whitelist easily as it will need to be frequently updated with new addresses. Let me know what you guys think would work for me.