Spam Resource: All Things Deliverability

Smart web developer and systems admin Mike Cardwell put together something neat that I think you'll want to check out: Email Privacy Tester . Plug in your email address, and his system will send you an email message. That message will contain a whole bunch of different type…

DMARC (specifically, DMARC with a p=reject policy) does one thing: It makes it very difficult for somebody to use your domain in a from address without your permission. It doesn't stop spam from open relays, open proxies, snowshoeing network blocks, nor does it prevent peop…

Allow me to share with you my rough notes compiled during my recent configuration of email and DKIM on a new Ubuntu VPS installation. Hopefully these helpful hints will help the next poor soul trying to get DKIM up and running on the first try: SpamAssassin seems to want to fai…

If you've ever set up catch-all domain names, that accept mail destined to any address, or set up your MTA in a way where all mail is accepted before checking to see if the recipient is valid, then you've probably seen emails containing this quote: "It’s 106 miles …

A few weeks ago, somebody on the Mailop list asked about an email they received. Turns out, it was a Challenge/Response spam filter. You know, one of those emails from a robot that says "click here to prove you're not a robot, otherwise I'm not going to deliver you…