[DanielP]

zimbra@mail:~> host localhost
localhost has address 127.0.0.1
zimbra@mail:~> host mail.inside.domain.se
mail.inside.domain.se has address 192.168.1.1
zimbra@mail:~> host inside.domain.se
zimbra@mail:~>

Could the problem be that inside.domain.se dont have A record?

inside.domain.se is the domain, and all inside hosts are in that domain. The zimbra install is configured to setup inside.domain.se as the default domain.(altough, i tried with mail.inside.domain.se aswell without any luck)

/D