Fedora and fallback DNS servers

And then you throw PHBs into the mix.

Many moons ago, in the days back when ISPs actually knew what they were doing, our ISP upgraded their email servers, and they started sending "250 EHLO". Our MS Mail Gateway threw a hissy fit, and the PHB demanded that our ISP "fix" their sendmail, despite MS Mail completely ignoring the SMTP spec, namely that you MUST NOT quit in response to a command you don't recognise.

Cheers,
Wol