> Thanks for your reply. I found what my problem was. It was a brain > fart on my part. I had a typo in the DNS server IP. :)
Alrighty, then! > I am thinking most of the people on here are a little more advanced > than I am I haven't thought that yet, so let's keep it on-list. > (b) refusing NULL <> senders is an absolute no-no (IMail shouldn't > even have the option, in many of our opinions) > Why is this? Am I thinking of this incorrectly? Uh-huh. > If a sender is NULL, isn't this a spammer? Is there ever a situation > when a sender would be NULL and not be a spammer? Yes, almost every time! The NULL sender, or '<>', is required by the RFCs as an allowed sender of bounce messages. Sometimes, '<MAILER-DAEMON>' or other variants are used instead. But the '<>' is most common and MUST be allowed if your users are to get bounces. > I don't understand why this is a no-no. I bet you do now. > (c) disabling AUTH reporting is generally only necessary with > Netscape MUAs and can cause problems elswhere. > What kind of problems are we talking about? Some MUAs think--quite logically--that an EHLO reply that denies AUTH support means that AUTH credentials won't be honored, so they are never sent. Netscape (at least through 4.x) was screwy in an opposite way, demanding that AUTH *not* be announced if non-authenticated sessions were requested, IIRC. The bottom line is that turning off AUTH reporting provides you with 0.01% more security (well, probably 0.00%, but no one likes an absolutist) at a huge possible cost of alienating perfectly reasonable MUAs. It's not a best practice, unless your users are standardized on a broken MUA that can't cope. > I know you are one of the more intelligent members, and would > appreciate your feedback. I wouldn't call it intelligence, just focus--but thanks for the props. :) -Sandy Please visit http://www.ipswitch.com/support/mailing-lists.html to be removed from this list. An Archive of this list is available at: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Please visit the Knowledge Base for answers to frequently asked questions: http://www.ipswitch.com/support/IMail/
