Author: Jakob Hirsch Date: To: exim-users Subject: Re: [exim] MX name with _ : all relevant MX records point to
non-existent hosts
Rafał Kupka wrote:
>> (?i)^(?>(?(1)\.|())[^\W_](?>[a-z0-9/-_]*[^\W_])?)+$
>
> There is small error in regexp above. Character '-' in regexp ranges
> have to be last one before closing ']'.
>
> (?i)^(?>(?(1)\.|())[^\W_](?>[a-z0-9/_-]*[^\W_])?)+$
Um, right, of course.
> But "helo_allow_chars = _" in main section of exim.conf is much simpler
> solution (as someone else said already).
Yes, but to a different problem (incoming vs. outgoing), which hasn't
anything to do with DNS.
