2015/04/01 by Jérôme Gays.
Deliverability update: SFR on his way to a stringent filtering process
Through the last few days we have noticed — via our customer’s deliverability monitoring infrastructure — SFR’s enhancement of its filtering policies. For instance, we notice a bigger number of the ‘550.5.7.1 Message Content rejected’ messages after running the DATA command during SMPT dialogs. As far we can see, this enhancement is based on the […]
Categories: General
2015/02/23 by Jérôme Gays.
Message Systems acquires Port25 (PowerMTA)
Two weeks ago, Message Systems announced the acquisition of Port25, marker of the popular PowerMTA. Message Systems is the world’s main supplier of emailing infrastructures, running circa 20% of the world’s legitimate email. This purchase means an important milestone in the email sending arena. Both enterprises offer on-premise solutions to the world’s most massive emailing […]
2015/02/02 by Jérôme Gays.
What are the most important blacklists and how do you know if you are listed?
If you are reading this blog, you certainly know what a blacklist is. Nevertheless, we think it’s important to remember their significance in the email world and their impact on your deliverability. Blacklists are often referred to in different ways: RBL for Real-time Blackhole List or DNSBL for DNS blacklist. These terms all refer to […]
Categories: General