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, including opens and clicks. MessageSystems tells me some of their customers are using this to adjust campaigns on the fly.
- Built in campaign creators. In the past Message System users have had to used other software to create their messages, now the creation is built into the MTA.
- Template storage. Anyone inside an organization can access templates, no more awkward looking or unbranded password reset requests.
Today I also received word that Port 25 has updated the power MTA DKIM signing code to minimize DKIM replay attacks. This prevents some of the recent spam runs where senders hijack a valid reputation by taking a DKIM signed message, add extra headers and then resending it through another server.
For many applications, users can chose an open source MTA. But the commercial MTAs have a lot of features that make is so much easier for bulk senders to manage their reputations. I continue to be amazed at the features built into these appliances that make it easier for senders to comply with the challenging space that is email delivery.