>Tom Ivar Helbekkmo writes: > >"Mark A. Lewis" <mark at siliconjunkie.net> writes: > >> Lets say that Acme Widget has their mail hosted with Hostco. Acme Widget >> would rather not have mail.hostco.com in the mail headers for whatever >> reason. So, hostco doesn't setup a ptr record for it. This does not make >> Acme Widget or Hostco any more likely to be spammers, it just makes you >> more likely to drop their mail. > >Actually, the problem you're describing is routinely solved at any >decent ISP *without* breaking any rules. If the above were a genuine >scenario, I would conclude that Hostco is run by nincompoops. ;-) For the posterity of the list, and the wonderful information that's been provided so far for all of the newbie nincompoops out in CentOS list lurker-land ... Let's say that I'm a nincompoop newbie sysadmin from HostCo that would like to avoid breaking any rules. (In reality, I'm a PHB, and I let my sysadmin worry about the rule-breaking.) How would I go about providing a good, solid *matching* ptr (as in, mail from AcmeWidget.com reflects to mail.AcmeWidget.com at x.x.x.219 ... which also happens to be mail.hostco.com) for the bazillion and one virtual-hosted email accounts on mail.hostco.com? -Karl Katzke