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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:

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Monitoring Email Deliverability

I did an interview with Direct Mag recently about what I recommend mailers do to monitor email deliverability.

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Images at Yahoo

For a while, Yahoo was giving preferential “images always on” treatment to Return Path Certified senders. The tricky part of this was the senders had to register a DKIM selector key with Yahoo. I had a lot of (somewhat rude) things to say about this particular design decision.
Over the last few months, a number of senders have complained about being unable to update their selector keys with Yahoo. (Insert more rude comments about how broken it is to use the selector as a part of reputation.) Around the same time, a few of us have noticed that Yahoo seems to be turning on a lot of images by default. A few of the ESP delivery folks collaborated with me on checking into this. They could confirm that images were on by default for some of their customers without certification and without selector key registration.
Earlier this week, Return Path sent out an email to users that said that Yahoo would no longer be turning images on by default for Return Path Certified IPs.

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