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Tag: filtering

ISPs speak at M3AAWG

Last week at M3AAWG representatives from AOL, Yahoo, Gmail and Outlook spoke about their anti-spam technologies and what the organizations were looking for in email. This session was question and answers, with the moderator asking the majority of the questions. These answers are paraphrased from my notes or the MAAWG twitter stream from the session. […]

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Engagement, it’s not what you might think

Most delivery experts will tell you that ISPs measure recipient engagement as a part of their delivery. That’s absolutely true, but I think there’s a language difference that makes it hard for senders to understand what we mean by engagement. ISPs, and other filtering companies, profile their user base. They know, for instance, who logs […]

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Abuse it and lose it

Last week I blogged about the changes at ISPs that make “ISP Relations” harder for many senders. But it’s not just ISPs that are making it a little more difficult to get answers to questions, some spam filtering companies are pulling back on offering support to senders. For instance, Cloudmark sent out an email to […]

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Holiday mailing advice from mailbox providers

Christine Borgia has a post on the Return Path blog where she interviews a number of different groups (spamfilters, DNSBLs, mailbox providers) about their filtering strategy for the holidays. Overall, no one changes their filtering during the Holiday Mailing Season. On the other hand, many marketers do change their marketing strategies in ways that trigger […]

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Looking for message labs help?

There’s a common bounce error from the Message Labs’ filtering appliance that goes no where. 501 Connection rejected by policy [7.7] please visit www.messagelabs.com/support If you’re trying to troubleshoot a delivery problem and you find any reference to www.messagelabs.com/support, try http://www.symanteccloud.com/supportcentre/information/r_troublshooting instead. That link provides a little more information.

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ISP Relationships

Delivra has a new whitepaper written by Ken Magill talking about the value (or lack thereof) of relationships with ISPs. In Ken’s understated way, he calls baloney on ESPs that claim they have great delivery because they have good relationships with ISPs. He’s right. I get a lot of calls from potential clients and some […]

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Questions on Google lawsuit post

A couple questions in the previous discussion thread about the Google privacy case. Both concern permission granted to Google to scan emails. Google’s stance about this is fairly simple. Gmail users give explicit permission for their mail to be scanned. People who send mail to Gmail users give implicit permission for their mail to be […]

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Inbox challenges and dull email in the tabbed inbox

Getting to the inbox is becoming a greater and greater challenge for many marketers. According to Return Path, 22% of opt in mail doesn’t make it to the inbox. The challenge to marketers is that a lot of opt in mail isn’t important to the recipient. Sure, they’re happy enough to get it if they […]

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The 5 stages of a Spamhaus listing

Courtesy of Spencer over at Experian. The 5 Stages of Recovery

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Questions about Spamhaus

I have gotten a lot of questions about Spamhaus since I’ve been talking about them on the blog and on various mailing lists. Those questions can be condensed and summed up into a single thought. What engagement metrics should I monitor to avoid a Spamhaus listing? First off Spamhaus doesn’t care about about engagement. Spamhaus […]

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  • ReturnPath on DMARC+Yahoo

    Over at ReturnPath Christine has an excellent non-technical summary of the DMARC+Yahoo situation, along with some solid recommendations for what actions you might take to avoid the operational problems it can cause.No Comments


  • AOL problems

    Lots of people are reporting ongoing (RTR:GE) messages from AOL today.  This indicates the AOL mail servers are having problems and can't accept mail. This has nothing to do with spam, filtering or malicious email. This is simply their servers aren't functioning as well as they should be and so AOL can't accept all the mail thrown at them. These types of blocks resolve themselves. 1 Comment


  • Fixing discussion lists to work with new Yahoo policy

    Al has some really good advice on how to fix discussion lists to work with the new Yahoo policy. One thing I would add is the suggestion to actually check dmarc records before assuming policy. This will not only mean you're not having to rewrite things that don't need to be rewritten, but it will also mean you won't be caught flat footed if (when?) other free mail providers start publishing p=reject.No Comments


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