Email Authentication: SPF, DKIM, and DMARC Best Practices
Gmail Postmaster(y) page
2023/11/23 by Syed Alam.
IMPORTANT UPDATE 23/11/2023: Since November 15, Google has changed many of its SMTP answers, this blog post has been updated with these new messages. In case of any need, please reach out to the Postmastery Team. To help the sender community, we are delighted to share our extensive knowledge and experiences gained over the years […]
Categories: Authentication, ISP, Postmaster(y) ISP pages
SFR Postmaster(y) page
2023/09/29 by Yves-Marie Le Pors-Chauvel.
To help the sender community, we are very happy to share our experience collected over the past years, about Mailbox providers. This article is about a historic provider in France: SFR Grand Public (sfr.fr, neuf.fr, club-internet.fr, cegetel.net, numericable.fr, etc…). Postmastery integrates data from the aggregated Feedback Loop of SFR Grand Public, through its monitoring tool […]
Categories: Authentication, General, ISP, Postmaster(y) ISP pages
Office 365 / Microsoft 365 Postmaster(y) page
2023/09/28 by Olivier Moulene.
To help the sender community, we are glad to share our experiences collected over the years with some ISPs. This page is about Office 365 which is a subscription-based suite of productivity software and services developed by Microsoft. In this article we will focus on their email hosting solution: Exchange Online. We will highlight below […]
Categories: Authentication, Postmaster(y) ISP pages
Making the Choice: On-Prem or ESPs?
2023/09/28 by Maarten Oelering.
In June of this year, we were in Prague as one of the proud sponsors of the Deliverability Summit. We also took part in a great panel discussion Expert Advice from Alice Cornell, Steve Tuck of Halon, Matthew Grove of Mailchimp and our own Maarten Oelering. The discussion focussed on owning your email infrastructure. https://vimeo.com/845510055/4570b89de8? […]
Categories: Authentication, Deliverability, General
Yahoo Postmaster(y) page
2023/08/16 by Alex Irimia.
To help the sender community, we are glad to share our experiences collected over the years with some ISPs. This page is about Yahoo webmail (Yahoo postmaster) being one of the most used in the world. Postmastery is fully integrated with Yahoo’s CFL program, through its monitoring tools. We will highlight below topics: – Latest […]
Categories: Authentication, ISP, Postmaster(y) ISP pages
Improve Email Delivery with PowerMTA’s Defer-Job Setting
2023/04/14 by Alex Irimia.
Email delivery is a critical aspect of any business’s communication strategy. However, maintaining a good reputation for your email delivery IP can be a challenge, especially when using a shared IP with multiple customers. In such a scenario, the actions of one customer with a low reputation can adversely affect the entire queue, causing delays […]
Categories: Authentication, Deliverability, General, PowerMTA
Postmastery joins Signal Spam
2023/02/20 by Willem Stam.
Postmastery is becoming a member of Signal Spam to ensure our clients have maximum visibility into reputational threats and complaints emanating from the french eco-system. Signal Spam is a non-profit organisation dedicated to fighting against electronic messaging abuse, including spam, phishing, and malicious email content. It was founded in 2005 and is based in Paris, […]
Categories: Authentication, Deliverability, General