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How to best test from VM with port 25 closed by ISP

Hi,

how can I best test postfix delivery from a local VM if port 25 is
blocked by ISP.
My only intention is to setup another VM and make a network between them
and then send mails between them.
Or is there any other solution how I could get postfix from a VM to the
"world"?

Thanks!

Comments

Re: How to best test from VM with port 25 closed by ISP

By Matus UHLAR - f... at 02/13/2018 - 04:49

On 13.02.18 00:04, TG Servers wrote:
if you ISP doesn't unblock you, and you want to behave as mail server, you
have problem.

If you only want to send mai lto/through some servers, you can use
different port with client authentication.

Re: How to best test from VM with port 25 closed by ISP

By TG Servers at 02/13/2018 - 05:37

Am 13. Februar 2018 09:52:53 schrieb Matus UHLAR - fantomas
< ... at fantomas dot sk>:

I just want to test a real server install on a vm. As i wrote before I
think there are some general installation issues I have to check before.
Port 25 is not my problem I think.

Thanks.

Re: How to best test from VM with port 25 closed by ISP

By Wietse Venema at 02/12/2018 - 20:01

TG Servers:
Use a VPN?

Wietse

Re: How to best test from VM with port 25 closed by ISP

By TG Servers at 02/12/2018 - 20:05

Hm as you mention it i am connected through a VPN so there has to be
something else. Have to check that again.

Thanks

Am 13. Februar 2018 01:03:39 schrieb Wietse Venema < ... at porcupine dot org>:

Re: How to best test from VM with port 25 closed by ISP

By Wietse Venema at 02/12/2018 - 20:34

Server Messages:
Surely you can run more than one VPN?

Wietse

Re: How to best test from VM with port 25 closed by ISP

By TG Servers at 02/12/2018 - 20:56

The thing here is my main line is connected to a vpn through a pfsense
firewall so i have to check why i cannot send through port 25 (it is open
of course) or what causes that the mail is not received. To be honest I did
not look really deep into it until now so i have to do some thorough
checks. The VM i am using uses bridged adapter to the main box which hangs
on the pfsense wall.

Thomas

Am 13. Februar 2018 01:35:54 schrieb Wietse Venema < ... at porcupine dot org>:

Re: How to best test from VM with port 25 closed by ISP

By TG Servers at 02/12/2018 - 21:02

I also have to check if my receiving server might be rejecting cause there
are not all dns settings correct on the vm or sort of things. I hate vm
testing but as i am working on a complete and a bit complex server setup i
decided to don't hassle with a live server. But maybe a small cheap cloud
server would be a betterway to go as i could configure DNS and everything
more production near.

Thomas

Am 13. Februar 2018 01:57:22 schrieb Server Messages < ... at prvtmail dot net>:

Re: How to best test from VM with port 25 closed by ISP

By TG Servers at 02/12/2018 - 21:05

Will get back when I really know the definitive issue. Won't bother with
infrastructure issues here.

Am 13. Februar 2018 02:04:20 schrieb Server Messages < ... at prvtmail dot net>: