If you come up with a good strategy for this, let me know. Not only are we getting hit with it, for several weeks now, but I've seen lots of complaints from others on various lists.
I think the only thing to do is encourage, as strongly as possible, owners of broken mail systems to fix them. By this, I mean that they should validate recipients, and not accept mail then bounce it. Mail to invalid recipients should generate a 5xx error during DATA phase. If you're using spamassassin however, the vbounce plugin is supposed to offer some mitigation for this. Kurt On Tue, Apr 15, 2008 at 6:51 AM, yoth <[EMAIL PROTECTED]> wrote: > Hi all, > > We are having a pretty big problem with backscatter for one of our clients. > It seems that lately the spammers love spoofing their domain. We are getting > several complaints a week from users receiving large quantities of NDRs > because of this. > > I'm sure this must be a common problem for any company with a decent web > presence. We aren't using SPF records right now. I've read that often this > doesn't really help. Also, it will be a little hard to pull off when we > control the corporate network, but not the website where some email will be > generated. > > Has anyone gotten any suggestions or tricks for dealing with this. > Blocking/quarantining all NDRs seems like a bad idea also. > > Or maybe our spam gateway should be catching most of these? Lots of the > NDRs would contain the original message text, which is obviously spam. > > Any ideas? > > Bill > ~ Upgrade to Next Generation Antispam/Antivirus with Ninja! ~ > ~ <http://www.sunbelt-software.com/SunbeltMessagingNinja.cfm> ~ > ~ Upgrade to Next Generation Antispam/Antivirus with Ninja! ~ ~ <http://www.sunbelt-software.com/SunbeltMessagingNinja.cfm> ~
