Improve Email Delivery with PowerMTA’s Defer-Job Setting

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 […]

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Categories: Authentication, Deliverability, General, PowerMTA

Postmastery joins Signal Spam

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, […]

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Categories: Authentication, Deliverability, General

Outlook Postmaster(y) page

IMPORTANT UPDATE 02/04/2025: Outlook announced on their Community Blog that they will enforce requirements for High Volume sender starting May 5, 2025. To help the sender community, we are glad to share our experiences collected over the years with some ISPs. This page concerns Outlook.com, whose webmail is one of the most widely used in […]

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Categories: Authentication, Deliverability, ISP

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