list hygiene

Identifying domains that don’t accept or send email

identifying-domains-that-don’t-accept-or-send-email

A couple folks have asked me recently about MX records that they don’t understand. These records consist of a single . or they contain localhost or they are 127.0.0.1. In all cases, the domain owners use these records to signal that the domains don’t accept email. What do these records look like? Why do domains do this? In all cases it’s because the domain owners…

Read More »

Purging to prevent spamtraps

purging-to-prevent-spamtraps

Someone recently asked when they should purge addresses to remove spamtraps. To my mind this is actually the wrong question. Purging addresses that don’t engage is rarely about spamtraps, it’s about your overall communication processes. Well maintained traps will actively bounce mail for 6 – 12 months before turning the address into a trap. In those cases it’s mostly the whole domain being turned into…

Read More »
>