2015/04/01 by Jérôme Gays.
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 ‘522.214.171.124 Message Content rejected’ messages after running the DATA command during SMPT dialogs. As far we can see, this enhancement is based on the […]
2015/02/23 by Jérôme Gays.
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.
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 […]