PowerMTA 5.0: Using a proxy for email delivery

One new thing we are particularly excited about is PowerMTA 5.0 support for forward proxies: this allows delivery from IPs which don’t need to be co-located on the same server or subnet. In this blog post, we will explain this with a few use cases and introduce Postmastery’s MTA proxy for a ready-to-go solution. Use […]

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Categories: Authentication, Deliverability, General, PowerMTA

Google Postmaster Tools (GPT) unlocked via Postmastery Delivery Analytics

Postmastery took an important step in their objective to monitor all relevant email delivery metrics in one application: adding Google Postmaster Tools data. What is Google Postmaster Tools (GPT) For senders that monitor their reputation, Google Postmaster Tools (GPT) is an important resource. For those who haven’t yet heard about it, GPT is a website […]

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Categories: Authentication, Deliverability, General

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 […]

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Categories: Deliverability, General, Providers