Archive | March, 2008

Bind Zimbra On Specific IP Address

Posted on March 29, 2008 by admin in Email

Here’s how to configure Zimbra services to bind to a specific IP address. These instructions apply to ZCS 5.x only. Assume that the IP address is [IP]. SMTP (TCP 25) Edit /opt/zimbra/postfix/conf/master.cf. Change: smtp inet n – n – - smtpd To: [IP]:smtp inet n – n – - smtpd WEB (TCP 80/443/admin ports) Edit [...]

Here’s how to configure Zimbra services to bind to a specific IP address. These instructions apply to ZCS 5.x only. Assume that the IP address is [IP].

SMTP (TCP 25)

Edit /opt/zimbra/postfix/conf/master.cf.

Change:

smtp      inet  n       -       n       -       -       smtpd

To:

[IP]:smtp      inet  n       -       n       -       -       smtpd

WEB (TCP 80/443/admin ports)

Edit /opt/zimbra/jetty/etc/jetty.xml.in

After every line starting with:

<Set name="port">

Add:

<Set name="host">[IP]</Set>

POP/IMAP

Su to zimbra account.

Start zmprov:

./zmprov -s [IP]

Determine server name:

gas

Change bind addresses:

ms [DOMAIN] zimbraPop3BindAddress [IP]
ms [DOMAIN] zimbraPop3SSLBindAddress [IP]
ms [DOMAIN] zimbraImapBindAddress [IP]
ms [DOMAIN] zimbraImapSSLBindAddress [IP]

One additional trick is needed. Add these two IPTables rules to map 127.0.0.1:7071 to [IP]:7071.

/sbin/iptables -t nat -A PREROUTING -p tcp --destination 127.0.0.1  \
   --dport 7071 -j DNAT --to-destination [IP]
/sbin/iptables -t nat -A OUTPUT -p tcp --destination 127.0.0.1  \
   --dport 7071 -j DNAT --to-destination [IP]
/sbin/iptables -t nat -A PREROUTING -p tcp --destination 127.0.0.1  \
   --dport 80 -j DNAT --to-destination [IP]
/sbin/iptables -t nat -A OUTPUT -p tcp --destination 127.0.0.1  \
   --dport 80 -j DNAT --to-destination [IP]
/sbin/service iptables restart
/sbin/service iptables save
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