Email compliance & reputation – The inbox remembers

Email compliance and sender reputation may be well-worn topics, but they remain as critical as ever. This blog explores how they continue to shape deliverability—and why the inbox remembers ...

Mail relays – Part 2 | Problems with forwarded mail?

Forwarded mail can be more trouble than it’s worth - especially when it’s done without checks, validation, or spam filtering. Typos, unintended recipients, and forged senders can quickly snowball into blocklistings and ...

Mail relays – Part 1 | Authenticate your outgoing mail!

Email authentication used to be something only big players worried about. Not anymore. While small senders may not feel the heat yet, it’s only a matter of time before it reaches them ...

How Amazon SES works with Spamhaus to protect its network and reputation

When delivering emails is your core business, maintaining a reputable network for a reliable service without problems is EVERYTHING. This is a commitment that email service provider Amazon Simple Email Service (SES) ...

The Policy Blocklist: what is it, and why should you be on it?

It’s not always "bad" to be listed on one of Spamhaus' DNS Blocklists. Despite what you may think, there is one list you may want to be on: the Policy Blocklist (PBL) ...

ESPs: Why IP and Domain Reputation Matter and How to Manage Them

Maintaining a positive IP and domain reputation is essential for email service providers (ESPs) aiming to offer a successful email sending service. In this blog, we will explore the key principles and ...

Manage IP & domain reputation wisely – they’re valuable assets!

Trust. That’s a word with huge connotations. The Oxford Languages defines it as: believe in the reliability, truth, or ability of. But how can you believe in the reliability, truth or ability ...
Expired and exploited: Reviving a 30-year-old legacy domain for hijacking

Expired and exploited: Reviving a 30-year-old legacy domain for hijacking

Due to the current shortage of IPv4 addresses, any legacy IP block, regardless of its size, including Autonomous System (AS) networks, is at risk of being hijacked and misused for identity theft ...