On 08/03/2017 12:58 PM, Rafael Mora wrote:
Does the rDNS PTR record should be placed in my Centos7 server?
You can't do this. Hostgator or whoever manages the network (Telmex Colombia S.A. ?) has to do this.
I've created the DNS A record for lists.labbrands.com with the IP but I don't know the port that it uses so I can make a port redirect to my local ip address wich is 192.168.1.42, do you know the port?????
You need to forward port 25 for SMTP mail delivery and if you want the web UI (Postorius and HyperKitty) accessible from the outside, port 80 for http and/or port 443 for https <https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml>.
-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan