On 2014-06-03, Chris Knipe <[email protected]> wrote: > Hi All, > > We have a subscription service where users can sign up and receive > free access, prior to having to subscribe. Allot of users, are > signing up with DEA based email addresses, thus gaining access and > more than a single free trial - which is far from ideal for us. > > Is there any specific MTA way of dealing with DAE providers? For one, > that I have thought about, is that I can inject email into Exim using > a specific router. Is there a way to tell the router to queue the > mail for a random period of time prior to delivering it? Most DAE > addresses will for example only be active for a short period of time, > thus using a delay, can cause the email to bounce.
I don't think gorillamail or mailinator expire email addresses, and the clever users can shun those services and set themselves up as an MX using a free domain name from dyndns or no-ip. (for dnydns list mx.fakemx.net as secondary) > Is there perhaps any other, better, more intelligent ways of dealing > with DAE? A RBL of sorts? We have a database of some 400 odd domains > currently, and it's growing nicely but I'd prefer to be pro-active > about this and block before we have to 'manually' add it to a > database. a: rate limit based on signup IP address. b: captcha (mainly needed to keep the botnets out) c: arrange anti-synnergy such that several free accounts aren't as useful as one paid account. -- umop apisdn -- ## List details at https://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
