Rene Marticke wrote: > > Hi, there, > > let me explain two scene why this callouts are abuse. > > 1. > [EMAIL PROTECTED] send mail to [EMAIL PROTECTED] > --> domB callout whith [EMAIL PROTECTED] if [EMAIL PROTECTED] is valid. > --> domA use callout to -> so call domB if [EMAIL PROTECTED] is a valid > user .... loop > That doesn't apply to Exim because Exim by default uses a sender of <> which isn't going to create a loop like what you are claiming. In my case I use a real email address on my system to avoid the problems of servers who block <> but my real address is regged to never generate a return callout. > 2. if someone sends spam with [EMAIL PROTECTED] around the net > every mailserver asked you if there is a vaild account at yourdomain. I > think it's a fine DOS ... > > >
Exim caches callouts so as to minimize the callout traffic. I think it has a 2 hour memory? And - the callout is short, never delivering a real message. So the load factors would be really insignificant. What I see happening here is that UCEPROTECT is deliberately and falsely listing servers as spammers who really are not spammers. They are trying to change everyone's behavior using the listing as a threat. If you don't comply with their ideas about spam filtering then they punish you by falsely listing you as a spammer. I have contacted them several times about this and they refuse to whitelist me or fix the problem. So when they know that I'm a spam filtering company yet they refuse to take me off their list of spammers, what does that say about their list. It tells me that their list is worthless. My solution if they won't fix their problem is to make the spam filtering community aware of their business practices and hope that enough people quit using their blacklist that they have to go back to listing just spammers. When a company knowingly and deliberately lists people as spammers who they know are spam filtering companies then that needs to be exposed. I think they need to keep their politics separate from their lists. -- ## List details at http://www.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://www.exim.org/eximwiki/
