delivery temporarily suspended connection timed out postfix

Hi,

If your mails are not delivering and you getting the following error then probably your firewall is blocking your relay host. You need to allow it.

before-remote[4463]: check handlers for addr: xxxx@yahoo.com
postfix/smtp[4462]: 4099BBE815D: to=, relay=127.0.0.1[127.0.0.1], delay=0, status=sent (250 Ok: queued as 52B31BE815E)
postfix/qmgr[32070]: 52B31BE815E: to=, relay=none, delay=0, status=deferred (delivery temporarily suspended: connect to d.mx.mail.yahoo.com[209.191.88.254]: Connection timed out)

Solution:

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#/sbin/iptables -A INPUT -s 127.0.0.1 -j ACCEPT

This should fix the problem if not provide the following command also

#/sbin/iptables -A INPUT -d 127.0.0.1 -j ACCEPT

#/etc/init.d/iptables restart

Reference: http://forum.parallels.com/showthread.php?t=110411

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