RE: [exim] Exim server behind NAT router (and HELO)

> -----Original Message-----
> From: Richard Clayton [mailto:richard@highwayman.com]

> large sites (millions of emails a day, hundreds of
> thousands of customers) would drop too much legitimate email by being
> overly pedantic about HELO strings.

I don't even run a large site and I can't afford it. A fair number of
customers and vendors we deal with regularly seem to HELO with names like
"foobar.local" for some reason. HELO strings containing an underscore
aren't uncommon here, either.