All about ISP: SFR and SMTP error codes SFR_IN_XXX

Postmastery helps senders with monitoring tools (Postmastery Console) and consulting. In order to help the sender community, we are glad to share our experiences collected over the years with some ISPs. This page is about the French ISP : SFR (sfr.fr, neuf.fr, club-internet.fr, cegetel.net, numericable.fr, etc…). SFR: a historical ISP regrouping severals SFR is a […]

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Categories: Authentication, Deliverability, General

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 […]

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Categories: Authentication, ISP, Providers

Making the Choice: On-Prem or ESPs?

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? […]

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Categories: Authentication, Deliverability, General

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