It does have this configuration, however I'm not sure about how secure
that might be, or if it will still reject E-mail addressed locally
(IMail does not for instance). I think that this might be appropriate
as long as the server doesn't have roaming users that connect with SMTP
AUTH, or at least we had to work around that in one situation. The
good thing is that most small businesses that I have experienced only
allow remote access through OWA and they don't do SMTP AUTH. Maybe
I'll learn more in this thread though. FYI, we've been monitoring this stuff from a collection of domains and have found that about 0.5% of the spam is using cached lookups to deliver their E-mail, and over 5 months or so, there is no sign of any drop off in that activity. There are three main culprits, the enlargement spammer, some static porn house, and a Chinese language spammer, but there is a smattering of other stuff, some of it is less long-lived though. Firewalling the customer's server has become standard practice as a result, especially since this stuff can be targeted at just a few individuals and that ruins their experience with us, especially the enlargement guy that sends many messages. Matt Andy Schmidt wrote:
-- ===================================================== MailPure custom filters for Declude JunkMail Pro. http://www.mailpure.com/software/ ===================================================== |
- RE: [Declude.Virus] Virus bypassing newer MX records Goran Jovanovic
- RE: [Declude.Virus] Virus bypassing newer MX reco... Andy Schmidt
- RE: [Declude.Virus] Virus bypassing newer MX reco... Andy Schmidt
- Re: [Declude.Virus] Virus bypassing newer MX reco... Russ Uhte \(Lists\)
- Re: [Declude.Virus] Virus bypassing newer MX ... Bill Landry
- Re: [Declude.Virus] Virus bypassing newer... Russ Uhte \(Lists\)
- Re: [Declude.Virus] Virus bypassing newer... Greg Little