Dear All,
I am working in ZCS 7.1 cluster with active/passive environment. While relaying email I am getting an error that is the remote hope time out error. The setup is as follows

Active node: node1.example.com 192.168.1.10
Passive node: node2.example.com 192.168.1.11
Virtual name: mail. example.com 192.168.1.15

In both nodes /etc/hosts files same as below

127.0.0.1 localhost.localdomain localhost
::1 localhost6.localdomain6 localhost6
192.168.1.10 node1.example.com node1
192.168.1.11 node2.example.com node2
192.168.1.15 mail. example.com mail

DNS entries in DNS Server

MX 10 mail.example.com
node1.example.com IN A 192.168.1.10
node2.example.com IN A 192.168.1.11
mail.example.com IN A 192.168.1.12

Error in /var/maillog


Jun 1 19:40:23 node1 postfix/smtp[18055]: connect to alt3.gmail-smtp-in.l.google.com[173.194.76.27]:25: Connection timed out
Jun 1 19:40:23 node1 postfix/smtpd[19390]: disconnect from unknown[69.57.164.222]
Jun 1 19:40:44 node1 postfix/smtp[18055]: connect to alt4.gmail-smtp-in.l.google.com[173.194.73.27]:25: Connection timed out
Jun 1 19:40:44 node1 postfix/smtp[18055]: 9ACE3974962: to=<nalinewis@gmail.com>, relay=none, delay=827, delays=701/1.9/124/0, dsn=4.4.1, status=deferred (connect to alt4.gmail-smtp-in.l.google.com[173.194.73.27]:25: Connection timed out


Any help/guidance/suggestions would be most helpful

Regards,
ptx