Error in local-host-names for External Mailserver

[binover]

Hi guys,
I have this issue for a while, one domain have theirs own mails server so in ISPCONFIG is active the option "External Mailserver", but looks like every time I do something in ISPCONFIG that domain is written into /etc/postfix/local-host-names, its like ISPCONFIG thing that domain have a local mailserver.

Any idea?

Thanks.

[till]

You missed to set the co-domain to external mailserver too.

[binover]

Thank you very much!!! that seems to resolve it!