Understood, I adopt the communication in starttls port 25 between my servers. Thanks again to all. Samuel
Le ven. 19 août 2022 à 13:09, Matus UHLAR - fantomas <uh...@fantomas.sk> a écrit : > On 19.08.22 10:47, Sam R wrote: > > So I am a little divided, > >On the one hand I think that port 25 is enough to transmit mails locally, > > I guess by "locally" you mean "on the local network". > > port 25 is standard for server-server communication, 465/587 are standard > for client-server communication where authentication is required/enforced. > > >on the other hand I think that an encryption would be better, especially > on > >the dmz. > > I'd say "especially for connections crossing not-secured network". > mails within LAN/DMZ should be safe unencrypted, unless you have reason > not > to trust the network or someone on it. > > you still can use encryption on port 25 using the STARTTLS mechanizm. > > -- > Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/ > Warning: I wish NOT to receive e-mail advertising to this address. > Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu. > There's a long-standing bug relating to the x86 architecture that > allows you to install Windows. -- Matthew D. Fuller >
