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Thread: DNS configuration for zimbra in AD/DS behind a router/fw

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    Join Date
    Nov 2013
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    Question DNS configuration for zimbra in AD/DS behind a router/fw

    Hey!
    I have a problem! My network:
    ISP->Router: with 10.22.21.254, DNS:8.8.8.8
    ->Active directory windows server 2012 r2 / DC: office.domain.com, with 10.22.21.1, DHCP, DNS, IIS Server AND HYPER-V with two distros:
    -> UBNTU 12.04. with zimbra set up and running on mail.domain.com on 10.22.21.253; DNS over bind9 showing to 10.22.21.1:
    /var/cache/dv.domain.com:
    .... (NS Setting) ...
    mail.domain.com. IN A IP on what is my IP
    domain.com. IN A IP on what is my IP
    domain.com. IN MX 10 mail.domain.com.
    /etc/network/interfaces:
    auto lo
    iface lo inet loopback
    # The primary network interface
    auto eth0
    iface eth0 inet static
    address 10.22.21.4
    netmask 255.255.255.0
    network 10.22.21.0
    broadcast 10.22.21.255
    gateway 10.22.21.254

    -> another windows server 2012 with VPN/DA on vpn.office.domain.com (member of AD) with 10.22.21.252
    So my problem:
    everything is working quite well, I can resolv mx, dig and host are ok, I can get to zimbra from outside, login through ldap, send a mail, but can not RECEIVE a mail.
    DNS on AD/DC (office.domain.com) forward-lookup to mail.domain.com and to office.domain.com, and reverse lookup to mail.domain (10.22.21.253) and DNS OF ISP.
    ports 25, 110,143, 7071, 443 are open with routes to mail.domain.com
    Did I miss something?
    Thanks a lot! I appreciate your help!
    Last edited by jimmi4u; 11-04-2013 at 09:16 AM.

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