Hi everyone, I'm a newbie with virtualmin and networks, just some linux skills. I have setup a new vps with centos and installed successfully virtualmin and webmin. I have two virtualservers on it, hosting two different domains and they both need to send out mails with an ecommerce platform (sales, client mails etc). Here my doubts come: My vps hostname is server.pincopallino.com (example), and it hostes one of the virtual server with the domain pincopallino.com, and another one with domain rossi.com. The vps provider gave me two different ip address for the same machine. 220.127.116.11 and 18.104.22.168 for example (that i setup as name servers for both the domains, using name of the first domain. ie ns1.pincopallino.com, ns2.pincopallino.com) If i understood good, the service sending email (postfix or sendmail) will name server.pincopallino.com (like the hostname). I created a reverse dns for rossi.com on ip 22.214.171.124 but how can i force the mail server to send out email from that ip address? Because it only uses 126.96.36.199. And the last question: spf records. rossi.com has the v=spf1 a mx a:rossi.com ip4:188.8.131.52 ?all but the server names server.pincopallino.com... should I add that in spf records too? I read guides about that.. but it is not so clear to me when related to more virtual servers on one server. Thanks for your attention..