Spam+smtp

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Exchange Server Toolbox

Exchange Server Toolbox is a plug-in for the Microsoft Exchange Server 2003-2013. With Exchange Server Toolbox, you can handle all...

November 27, 2014 by JAM Software

Why spam can only be managed, not ended

Years ago when I was still a bit more naive, I thought we could end the spam dilemma if we would simply implement domain-level sender authentication using digital signatures.  In fact when David Berlind wrote  "Why spam could destroy the Internet" in November 2002, Berlind quoted me saying that every domain's official SMTP server should digitally sign each message to prove the email came from that domain.

October 25, 2007 by

Fix SMTP and leave port 25 alone for the sake of spam

Larry Seltzer of eWeek, whom I have great respect for and usually agree with, wrote this article on dealing with spam using the controversial tactic of blocking all outbound port 25 access.? The logic behind this is that the vast majority of spam in the world comes from "zombies" (millions of computers that have been hijacked by professional hackers and spammers?

April 11, 2005 by

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