2018/02/26 by Willem Stam.
AOL and Yahoo merge could impact your email delivery and MTA
A few weeks ago, AOL reported that AOL and Yahoo will come together under the OATH umbrella and merge with the Yahoo email infrastructure to serve both brands. This happened on 20 February 2018, and now all the AOL recipient domains’ MX, including the following, will point to mx-aol.mail.gm0.yahoodns.net: – aol.com – verizon.net – aol.co.uk […]
Categories: Authentication, Deliverability, General, PowerMTA, Providers
2018/02/26 by Willem Stam.
Case study – Why typo domains can cause severe email delivery issues
In our daily email delivery monitoring activities, we recently saw the damage that typo domains can do. In this case study, simple typos in domains caused severe email delivery issues. We will recap what happened and how we solved the issue. Hopefully, other senders can avoid this kind of situation in the future. Postmastery, we […]
Categories: Authentication, Case Studies, Deliverability, General, PowerMTA
2017/11/24 by Willem Stam.
Happy client: SuccessByEmail.com
“I would like to thank the PowerMTA email delivery experts at Postmastery. Postmastery was incredibly responsive to our specific delivery needs and wasted no time in taking a scientific approach to identify specific issues and formulate a path to resolution. From precise data collection and analysis to resolution recommendations and follow up, Postmastery does a […]
Categories: Authentication, Case Studies, General
2017/09/05 by Willem Stam.
Port25 2017 European Summit
Port25 and Postmastery are pleased to invite you to the Port25 2017 European Summit Don’t miss out on this yearly Port25 summit event for people in the world of high volume email delivery. Hear expert speakers from Port25, Postmastery and other companies cover the most topical issues and get all your questions regarding delivery, control, […]
Categories: General
2017/07/13 by Willem Stam.
Choosing the right DMARC policy
Publishing DMARC records is more popular than ever. Even among those that don’t have domains related to sensitive fields, such as financial institutions, that are vulnerable to abuse. Have you thought about the policy that underpins your objectives for DMARC? Do you even have clear objectives for DMARC? DMARC policies DMARC requires three policies: none, […]
Categories: Authentication, DMARC, General
2017/05/26 by Maarten Oelering.
Five new delivery controls in PowerMTA 4.5
PowerMTA (PMTA 4.5) always had a strong focus on ‘doing one thing, and doing it right’. That one thing is email delivery. This sounds like a simple task, but it is hard to do at scale, both in terms of volume as well as in terms of the differences in the behaviour of receiving systems. […]
Categories: Authentication, General, PowerMTA
2017/05/09 by Willem Stam.
Postmastery and DeliverNow Announce Merger
Amsterdam, The Netherlands and Paris, France – 09 May 2017 – Postmastery BV (“Postmastery”) and DeliverNow Inc. (“DeliverNow”), leading providers of email deliverability services and solutions, today announced the merger of the two companies. European Market Leader in deliverability Since 2007, DeliverNow and Postmastery have offered some of the most innovative and successful email deliverability […]
Categories: General