Rafael Alan Bleiweiss wrote: > > I'm trying to breath life into my web work again, and this week discoverd > that my little mail server IP (I'm running Post.office) was added to a > "SpamWatch" list (ORDB.org) and I immediately got a call from a client that > their email was rejected from a foriegn host because that host uses the > ORDB service.
Good. And you are lucky that it is ORDB, it uses technical criteria and it is quite easy to get off it. > Let's say I've got a client in California, who has a return address of one > of my local accounts, but hey, they're not sending email from inside my > network, so I originally said only allow relaying for mail with local > domain names in the FROM field... > > With spammers spoofing good FROM fields these days, ORDB says - no go.... > so then I think my only choice is to allow specific IP's... but how am I > supposed to know what IP a client is using if they're on a dial up account, > say through AOL or PacBell, or some little host in Iowa that forces dynamic > changing IPs with each log-on? > > Their IP changes. Surely I can't let ALL AOL IPs through or ALL PacBell > IPs through... there's got to be spammers on one or both of those right? > > So how do I deal with this? You don't, they do. Just as you provide an SMTP service for your own IP addressen, ISPs provide an SMTP service for their own I addresses. Tell your customers to use whatever SMTP service their ISP provides. You could start messing with authenticated SMTP, but with the increasing number of ISPs blocking outgoing traffic on port 25, that spells trouble. Let alone that if one of your clients get infected with a virus their ISP gets to clean up the mess, and not you. > Just as a side note - last year, before I even understood about relaying at > ALL, I had allowed ALL mail through, Don't you read manuals? http://support.openwave.com/post_office/docs/PO/PO_v3.5_AdminGuide/HTML_Adminv3.5/admin01.htm#E11E18 http://support.openwave.com/post_office/docs/whitepapersdl/IM-PO-anti-relay.pdf Jochem ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Archives: http://www.houseoffusion.com/cf_lists/index.cfm?forumid=4 Subscription: http://www.houseoffusion.com/cf_lists/index.cfm?method=subscribe&forumid=4 FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Your ad could be here. Monies from ads go to support these lists and provide more resources for the community. http://www.fusionauthority.com/ads.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4
