On 30 Jan 2018 3:43 a.m., "Paul" <p...@netpresto.co.uk> wrote:
What is the source IP you see making connections to your new postfix
server
?


On 30.01.18 09:28, jin&hitman&Barracuda wrote:
It is 172.27.203.20

2018-01-30 12:03 GMT+03:00 Matus UHLAR - fantomas <uh...@fantomas.sk>:
this is also a private address and it should not appear in the public
internet. Should not be a problem between servers.

If you see this IP when you connect to your postfix from the internet,
complain to your new ISP immediately. Connections from outside should not
be
NATted.

once again, when you connect from outside to 213.14.BBB.59, do you see the
connection coming from 172.27.203.20?

If so, this will hardly spoil any blacklisting or whitelisting and of course
spam detection. Ask the ISP for not doing source NAT when connecting from
outside to inside.

let's clear things up:

- which IP do you have when mailing to the outside?
- which IP you have to connect from outside in order to get to your mail
server?

On 30.01.18 13:01, jin&hitman&Barracuda wrote:
When I reach to another host, I see this address 213.74.AAA.114 as my source
When I connect to new postfix I use this IP  213.14.BBB.59

no problem - you just need to have proper valir reverse (and forward) DNS
records for 213.74.AAA.114, while MX can point to 213.14.BBB.59

however I would ask the ISP if they can't provide the same IP, for easier
troubleshooting.

--
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.
- Have you got anything without Spam in it?
- Well, there's Spam egg sausage and Spam, that's not got much Spam in it.

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