FAQ / General Debugging / Q0031
Q0031
Question
Exim is rejecting connections from hosts that have more than one IP address, for no apparent reason.
Answer
You are using Solaris 7 or earlier, and have nis dns files in /etc/nsswitch.conf. Change this to dns nis files to avoid hitting Sun bug 1154236 (a bad interaction between NIS and the DNS).
FAQ / General Debugging / Q0031