On 27.03.08 17:05, R.Smits wrote: > Is there something I can do that our company addresses cannot be used > for sending spam ? Is DKIM an answer ?
yes, another answer is SPF. > A lot of our users get "delivery failed" messages. So a spammer is > sending spam with our addresses :-( > > A difficult problem I think ? a known problem, that's why SPF and DKIM exist at all. Not everyone is using them but as their use increases, their effectiveness increases too. I am not sure how much mailservers that accept-then-bounce support those protocols, but there may be other, SPF snd DKIM checking before those. Remember to force all you users to authenticate on your server, if tou use SPF and DKIM. -- Matus UHLAR - fantomas, [EMAIL PROTECTED] ; http://www.fantomas.sk/ Warning: I wish NOT to receive e-mail advertising to this address. Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu. (R)etry, (A)bort, (C)ancer
