2023/09/28 by Olivier Moulene.
Office 365 / Microsoft 365 Postmaster(y) page
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, ISP, Providers
2019/10/07 by Jérôme Gays.
SFR Deliverability: Explaining error codes (GU_EIB) and the ongoing error threshold
Before getting to the actual matter, it is important to brush upon a few relevant chronological events in the past regarding SFR. Even though SFR has been carrying this name since 1987, the many other departments in this group have changed quite a lot ever since. During the past 10 years, SFR has made the […]
Categories: Deliverability, General, Providers
2019/09/04 by Jérôme Gays.
Check your (Power)MTA settings: Numericable and Noos MXs records moved to SFR
In 2014, French ISPs Numericable and SFR merged to become the Altice France group. Numericable was itself the result of a merger between NC Numericable and Noos in 2007. Up to now, mailboxes at these ISPs were managed independently using different MXs and anti-spam protection. Noos and Numericable domains on one end and SFR domains […]
Categories: Authentication, Deliverability, General, Postfix, PowerMTA, Providers