Posts tagged Disable IPv6 in Exim on cPanel server

Disable IPv6 in Exim

Many times, it happens that ┬ásending emails to Gmail or few other ISP’s are getting rejected when Ipv6 networking is enabled on the server.
This is basically because, exim attempts to deliver the emails using IPv6 network by default and some times it returns the messageNetwork is unreachable“, specially to Gmail addresses.

This can be easily fixed by forcing exim to deliver the emails using the IPv4 IP address instead of IPv6 address.
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