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Category: Delivery Improvement

Delivery reflects recipient desires

Ken has an article today about how Pro Flowers managed to get their mail out of the bulk folder at Gmail by asking their recipients for help. This year, ProFlowers apparently took into account Gmail’s use of sender reputation and user engagement in its spam filtering rules by using subject lines, such as: “Gmail Customer […]

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The 500 mile email

This is a great story from Trey Harris about a real email delivery issue from the mid 1990s. Here’s a problem that sounded impossible…  I almost regret posting the story to a wide audience, because it makes a great tale over drinks at a conference. :-)  The story is slightly altered in order to protect […]

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Gathering data at subscription time

I recently received a survey from my Congressional Representative. She wanted to know what I wanted her to focus on in the coming year. I decided to go ahead and answer the survey, as I have some rather strong opinions on some of the stuff happening in Congress these days. The email itself was pretty […]

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DKIM deployment challenges

Cloudmark has an interesting blog post pointing out some of the challenges of signing mail with DKIM in a large company with a diverse mail system.

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About that Junk Folder

I use a pretty standard mail filtering setup – a fairly vanilla SpamAssassin setup on the front end, combined with naive bayesian content filters in my mail client. So I don’t reject any mail, it just ends up in one of my inboxes or a junk folder. And I have a mix of normal consumer […]

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IP reputation and the bulk folder

I’ve spent much of today talking to various people about IP reputation and bulk foldering. It’s an interesting topic, and one that has changed quite a bit in the past few months. Here are a few of the things I said on the topic. Generally IPs that the ISP has not seen traffic from before […]

6 Comments

How do I know you’re spamming?

There are a number of reasons I know that mail coming into my mailbox is spam. I get 15 copies. There are a lot of spammers out there who buy and scrape addresses and don’t do even the simplest of de-duping. Send multiple copies to a single address, you’re probably spamming. I get mail to […]

2 Comments

URL Shortening and Email

Any time you put a URL in mail you send out, you’re sharing the reputation of everyone who uses URLs with that hostname. So if other people send unwanted email that has the same URL in it that can cause your mail to be blocked or sent to the bulk folder. That has a bunch […]

7 Comments

Bit.ly gets you Blocked

URL shorteners, like bit.ly, moby.to and tinyurl.com, do three things: Make a URL shorter Track clicks on the URL Hide the destination URL Making URLs shorter was their original role, and it’s why they’re so common in media where the raw URL is visible to the recipient – instant messaging, twitter and other microblogs, and […]

18 Comments

It’s Wednesday – do you know where your sales staff are?

I received an email yesterday with the subject “Please confirm your lunch reservation”. It didn’t look like a typical spam subject line, but wasn’t from anywhere I recognized. I take a look. I’ve reserved a seat for you (and up to 2 guests from Word) at your choice of upcoming, complimentary lunch seminars that I […]

2 Comments
  • AOL compromise

    Lots of reports today of a security problem at AOL where accounts are sending spam, or are being spoofed in spam runs or something. Details are hazy, but there seems to be quite a bit of noise surrounding this incident. AOL hasn't provided any information as of yet as to what is going on.4 Comments


  • 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


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