Hello guys, how are you? I'm just writing here because I've tried all the possible options to solve this problem and I failed! I've followed this installation manual: https://www.howtoforge.com/tutorial...pureftpd-bind-postfix-doveot-and-ispconfig/3/ And I'm with a domain, DNS configuration: type A : cp.hospedagemvip.ml 3600 126.96.36.199 type MX: 3600 cp.hospedagemvip.ml Priority 10 The problem: I can't receive emails. from external servers or from localhost I get always the same error: Sep 26 15:52:34 hospedagemvip postfix/smtp: connect to 127.0.0.1[127.0.0.1]:10024: Connection refused I don't know if you want more information but please ask me then I send to you! Thank you very much!