PowerMTA Configuration, Optimization & Troubleshooting
Gmail’s wide deployment of TLS
2016/02/22 by Jérôme Gays.
When talking about authentication and encryption technologies —such are SPF, DKIM, DMARC—, Gmail has always been at the cutting edge of the topic. After having implemented Google Postmaster (read our related article), it is therefore possible to monitor the percentage of Google’s outgoing and incoming emails TLS encrypted or not. Announced by Google last week, […]
Categories: Authentication, General, PowerMTA
Message Systems acquires Port25 (PowerMTA)
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 […]
PowerMTA High Volume Sending and Email Authentication
2014/04/24 by Jérôme Gays.
So you decided to take the path of in-house deliverability (see our article regarding this topic), but there is one more thing to think about: Which is the sending solution to pick out from the others? By Postmastery, we made up our mind and decided — as well as becoming both an authorized retailer and […]
Why I chose a commercial grade MTA
2010/01/01 by Maarten Oelering.
For sending emails, there is a wealth of solutions. On the open source side, there is Sendmail, Qmail, Exim and Postfix. Then there are a number of commercial MTAs available, at different price levels. The most well known vendors are Message Systems, Port25 and StrongMail. Postfix is a popular open source MTA thanks to it’s […]
Categories: Authentication, General, Postfix, PowerMTA
PowerMTA Email Relay Solutions for Marketing
2010/01/01 by Maarten Oelering.
If you are a sender providing email relay services, how do you make sure that bounces and complaints are properly handled? Often the emails are generated by applications that hand-off the delivery to a relay service but have no means for processing returning bounces. This was also a question at 1-2-1 Marketing, a Texas based […]
Categories: Case Studies, General, PowerMTA
Interspire bounce processing add-on for PowerMTA
2010/01/01 by Maarten Oelering.
Interspire is perhaps the most popular email marketing tool. Used with PowerMTA, it becomes a powerful and complete email solution. But the two were not integrated with regard to bounce processing. Until now. Postmastery regularly set up turn-key email systems based on Interspire and PowerMTA. The systems were complemented by a POP/IMAP server so bounce […]
DKIM recipe for PowerMTA
2010/01/01 by Maarten Oelering.
DomainKeys, and it’s successor DKIM, are important email authentication techniques. Based on cryptography, they are more secure than SPF and Sender ID. With DomainKeys/DKIM the integrity of the content is also protected and authentication does not break when emails are being forwarded. DomainKeys/DKIM is used by large webmail providers such as Google, Yahoo and AOL. […]