Author: W B Hacker Date: To: exim users Subject: Re: [exim] MX name with _ : all relevant MX records point to
non-existent hosts
Tony Meyer wrote: >> The domain.com is simply an example. Not the real one.
>
> I believe you're looking for:
>
> helo_allow_chars = _
>
> However, their admin is incorrect - they'll get rejections at many
> more places than just yours. The correct fix is to correct the HELO
> value, but this will ignore the problem if that's what you want.
>
> Cheers,
> Tony
>
Quoting the OP:
"My users are unable to send email to that domain..."
