Mailserver different server

[madmucho]

Hi all, im little bit confused, i try solve problem with some of my domains i try slowly explain problem.

I have website for domainX on server1 and mailserver for this domain is exchange on server2

mailusers on server1.* try to send mail to domainX and there is problem
When try this another users from server3.* all is ok transport work as i want.

I search this forum for relative topics, i have set on all subdomains and domainX mailserver to external.
MX Checkbox in site is unchecked i try add mx record in dns manager server1 points to my server2 ip but when i send mail using webmail from server1.domainY addresed to user.domainX mail returns with this debug message

Action: failed
Status: 5.4.6
Diagnostic-Code: X-Postfix; mail for server1.domainX loops back to myself


Any idea how to set this correctly?

[falko]

Please add server1.domainX at the end of /etc/postfix/local-host-names and restart Postfix.

[madmucho]

Thank you for reply,
When i do what you say, mailserver try deliver mail from server1 users localy, not to server2... i send mail from ssh as root to admin@server2 and this is delivered to local webadministration account for domain.
:-/

[madmucho]

Maibe i find something that will help, i change ip in DNS Entry where Domain (SOA) hostname and ipaddress is to correct ip, when i have mx record mail.
4dprojekt.cz point to A record mail.4dprojekt.cz and this point to correct ip, telnet mail.4dprojekt.cz 25 point to exchange, but telnet 4dprojekt.cz 25 poing to local postfix, and that was problem, i change ip on this screen and now telnet to 25 port point to correct ip.

[till]

Please make sure that you set the website and co-domain in ispconfig to external mailserver.

[madmucho]

Main site and all co-domains for this site is defined in listbox as external.

[falko]

So you want to deliver emails for the server's main domain to an external server? You can do this with transports. Take a look at man 5 transport

[madmucho]

Aha, that looks what i looking for. I try this on testing domain.

But now whit changed DNS that work perfectly.

But i dont understand why server want deliver mail localy, why dont use dns information from other dns servers.
For this site i have not specified mx record, MX reccord is specified at domain master, and that point to correct location.