|
Chris Bipes wrote: > 1. We have several domains here at CrossCheck. One mail server is hosting > all the domains e-mail using one IP address. How can rDNS resolve to all > the domains to the same IP address. Does rDNS give you a list of all the > associated domains? rDNS, by definition, can only resolve to a single host name. One IP == one host name. Multiple host names, of course, can resolve to the same IP. > 2. We provided a service for retailers and acknowledge receipt of payment > from the retailer to the consumer. So in effect we are SPAMming for a real > business reason. This will never match the rDNS to the server's domains. > rDNS just does not cut the mustard alone. It should add points to a total > score of SPAM filtering but not be a show stopper. rDNS only means the IP owner is willing to point the address to a specific name. It's a weak anti-spam technique at best. Useless at worst. I tried implementing a similar rule on my mail server (block mail from server's who's IP doesn't resolve to a name) and ended up rejecting a lot of legitimate mail. david -- David Gibbs david@xxxxxxxxxxxx Receipt of this message does not grant you permission to send me Unsolicited Commercial Email
As an Amazon Associate we earn from qualifying purchases.
This mailing list archive is Copyright 1997-2024 by midrange.com and David Gibbs as a compilation work. Use of the archive is restricted to research of a business or technical nature. Any other uses are prohibited. Full details are available on our policy page. If you have questions about this, please contact [javascript protected email address].
Operating expenses for this site are earned using the Amazon Associate program and Google Adsense.