[pfx] Re: postfix ports questions

2023-05-14 Thread Allen Coates via Postfix-users
On 14/05/2023 01:09, Tom Reed via Postfix-users wrote: >> On Sat, May 13, 2023 at 06:51:30PM +0800, Tom Reed via Postfix-users >> wrote: >> >>> Can I setup only port 25 open to the world? If port 465/587 are filtered >>> by iptables which only permit internal users to connect, does this make >>>

[pfx] Re: postfix ports questions

2023-05-13 Thread Tom Reed via Postfix-users
> On Sat, May 13, 2023 at 06:51:30PM +0800, Tom Reed via Postfix-users > wrote: > >> Can I setup only port 25 open to the world? If port 465/587 are filtered >> by iptables which only permit internal users to connect, does this make >> sense to external MTAs (such as google, MS's)? > > You do not n

[pfx] Re: postfix ports questions

2023-05-13 Thread Viktor Dukhovni via Postfix-users
On Sat, May 13, 2023 at 06:51:30PM +0800, Tom Reed via Postfix-users wrote: > Can I setup only port 25 open to the world? If port 465/587 are filtered > by iptables which only permit internal users to connect, does this make > sense to external MTAs (such as google, MS's)? You do not need to expo

[pfx] Re: postfix ports questions

2023-05-13 Thread Wietse Venema via Postfix-users
Tom Reed via Postfix-users: > Hello > > my postfix has SSL certificates deployed. > > Can I setup only port 25 open to the world? If port 465/587 are filtered > by iptables which only permit internal users to connect, does this make > sense to external MTAs (such as google, MS's)? Port 25 is for