The Friday 2003-12-05 at 08:32 +0100, Togan Muftuoglu wrote:
I have not upgraded yet the box sits on the shelve for a long time :-)
I feel lazy, so I'll wait till next release O:-)
address. It is an unsolvable problem, even for small businesses.
Currently postfix is only checking if you have reverse address if yes then then next protection is in in effect. It is not looking if your reverse is what you are claiming to be.
Ah. Right, Tiscali I think doesn't have any reverse address. My other provider (teleline alias terra) has. I'll try to remember next time I write to you :-)
However it is a solvable problem depending on your ISP's willingness to work with you.
None! In my case, I don't have a domain, so, none. On the case of some friends of mine, who have been in this business for a long time, they say it is also impossible unless you hire the domain using the ISP services.
Another idea - this I think exists commercially - when an email from a not whitelisted name comes, it is answered by a robot, requesting an answer; ie, it is a challenge/response setup. When the answer is received, the name is added to the whitelist list, and the original email is forwarded to the recipient.
This idea IMO creates for spam then stoppping it
I guess you mean to say that it would increment spam. Possibly. However, I read somewhere that this is a commercially used idea. Perhaps it is used not for individual addresses, but for a whole domain - after all, the domain is known to exist - and the challenge is done by the postmaster or some such address, not by the recipient itself.
I think I will stick to what I have for some time at least till I finish unpacking. Thanks for the ideas they are appreciated
Don't worry, they were thrown out just for comments, not for actually you using them. Some of those ideas need somebody developing them. -- Cheers, Carlos Robinson