ArchiveJune 2014

Authenticating with SPF: -all or ~all

What is SPF? Sender policy framework (SPF, RFC 7208) is an authentication process that ties the 5321.from (also known as the mail from, envelope from or return path) to authorized sending IP addresses. This authorization is published in a TXT record in DNS. Receivers can check SPF at the beginning of a SMTP transaction, compare the 5321.from domain to the connecting IP address and determine if...

Affiliate mailers struggling

What are affiliate mailers? Affiliate mailers collect email addresses and then rent access to those addresses out to 3rd parties. There are a wide range of vendors that fall into the affiliate category. Some vendors compile lists through co-registration, others compile lists themselves through website opt-ins and some affiliate vendors fulfill mailing requests by hiring affiliates. There are, of...

Updates to commercial MTAs

Last week Message Systems announced the release of Momentum 4. This high volume MTA has a large number of features that make it possible for large volume senders to manage their email and their delivery. I had the opportunity to get a preview of the new features and was quite impressed with the expanded features. Improvements that caught my eye include: Real time views of delivery statistics...

Stop telling me how great Spamarrest is

Late last year, Al wrote a piece discussing how Spamarrest lost a court case. In the comments on that piece I described how much I really detest Spamarrest because of all the spam I get from Spamarrest users. Every few weeks, someone notices that post again and points it out to Spamarrest users who then come over here to tell me how wonderful Spamarrest is for them. I Get It. You like Spamarrest...

A good example of a privacy change notification

A friendly reader sent me this example of the notice Coldwater Creek sent out to subscribers this week. Coldwater Creek was a major retailer that recently filed for bankruptcy. As part of that, they’re transferring assets, including customer lists, to a holding company for potential use when the company is re-launched. That holding company is also the parent company of Talbots, another...

Spam filters and mailbox usage

It’s no secret that I run very little in the way of spam filters, and what filters I do run don’t throw away mail, they just shove it into various mailboxes. Looking at my mailboxes currently I have 11216 unread messages in my mail.app junk folder, 10600 unread messages in my work spam assassin folder and 29401 messages in my personal spam assassin folder (mail getting more than +7 on...

Are FBLs required for a clean mail stream?

A few years ago I would have said that a good mailer could have a good mailing program without necessarily participating in FBL programs. I’m not convinced that’s true any longer. As the mailbox providers and ISPs develop more complex filtering methodologies, it’s important for senders to get any possible feedback from recipients. That press on the this-is-spam button may not...

Spammers react to Y! DMARC policy

It’s probably only a surprise to people who think DMARC is the silver bullet to fixing email problems, but the spammers who were so abusing yahoo.com have moved on… to ymail.com. In the rush to deploy their DMARC policy, apparently Yahoo forgot they have hundreds of other domains. Domains that are currently not publishing a DMARC policy. Spammers are now using those domains as the...

May 2014: The month in email

It’s been a busy and exciting month for us here. Laura finished a multi-year project with M3AAWG, the Messaging, Malware and Mobile Anti-Abuse Working Group (look for the results to be published later this year) and continued working with clients on interesting delivery challenges and program opportunities. Steve focused on development on the next version release of Abacus, our flagship abuse...

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