> Our host names which appear in MAIL From and other fields contain > "_" - charachters, for example xyz_hp01.vs.dasa.de. This "_" seems
> to confuse exim, as the message is being refused and I receive the
> following error mail as a result of sending a mail as
> hess@vr1e31_hp01.vs.dasa.de to hess@ve1hf3_xt3.vs.dasa.de, the new
> LINUX machine with exim running:
The only characters that are allowed in domain names are:
a-z
0-9
- (dash)
apperently I have heard that it is possible to have country specific
letters such as ä,ö,ü in a domain name as well... don't know whether
that works, but _ (underscore) is an illegal character...
