2018-01-30 12:03 GMT+03:00 Matus UHLAR - fantomas <uh...@fantomas.sk>:
> On 30.01.18 00:09, jin&hitman&Barracuda wrote: > >> In-Reply-To: <caldev8cxn8fc5ej4zntielpokc-8fvozze6wt00b5qzpeqf...@mail.gm >> ail.com> >> References: <caldev8f6dsgwbzsav21rtekxd69lgrnwvrd1tgkapyhufsx...@mail.gm >> ail.com> >> <CALdev8fMW22bRAnyDYsRbcqjAcNUitUUqB=wcef0-o7jgaq...@mail.gmail.com> >> > > hell, how did you create this e-mail? it looks like reply to thread with > another 9 e-mails. (Plese send new post when asking new question) > > We are tring to move our mx server to another isp. They gave us an IP >> address but there is some strange points. When i try to connect any mail >> related port on that ip, it send my connection to our new postfix server. >> > > this is expected, isn't it? > > There is a destination nat on it. It is strange becouse i can't see my >> actual source ip. I tried with many different hosts and It looks like >> there >> is a source nat and i saw same ip as my source ip wherever i try. >> > > this is also expected, when you have server on network with private IPs. > > From new postfix server, when i try to reach any server on internet, i see >> another ip address on the source ip field and it is fixed too. >> >> I believe there is a mistake. Could it be feasible two different ip for >> incoming and outgoing on one mx server ? >> > > it's apparently a mistake, but might not be a problem. the incoming IP and > outgoing IP don't need be the same, although it's > easier when they are. > > On 30 Jan 2018 12:56 a.m., "Kevin A. McGrail" <kmcgr...@pccc.com> wrote: >> With NAT it could definitely be possible. What's your machines local ip >> address with ifconfig? Is it a reserved private address? >> > > On 30.01.18 01:03, jin&hitman&Barracuda wrote: > >> It is 192.168.34.30/24 >> > > this is a private address, not visible in the internet. > > 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 >> > > 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. > > 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? > > -- > 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 > 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 -- *There is no place like "/home"* *From HemiB A R R A C U D A !*
