Bron Gondwana wrote, On 11/18/10 8:14 AM:
On Thu, Nov 18, 2010 at 06:55:14AM -0600, Noel Jones wrote:
On 11/18/2010 3:12 AM, J. Roeleveld wrote:
Hi All,
I've been having issues where emails are being rejected by Cyrus because the
"From" address contains an underscore in the domain name.
...
PS. I have contacted the domain admins where these are coming from, but I'm
not convinced the user is actually using their smtp-server for outbound
emails.
Seems like contacting a Cyrus list is a better idea.
Yeah, we're on it. Seriously considering not being so strict
about the domain name. There was stuff from Brad Fitzpatrick
when LiveJournal allowed them a few years ago - saying pretty
much everything allows underscores in web stuff. Wondering if
it's worth fighting the "standards complient" fight.
Yes, it is. The fact that underscores are legal in DNS labels but not in
mailable domain names has proven itself as a useful tool, particularly given
the logistical and political difficulties of defining new DNS record types.
There are also people who use underscores in hostnames intentionally to
interfere with their usefulness as spam zombies.
