Finally! It's time for another Spam Resource Tuesday Tip. The goal? To share short and actionable deliverability tips and tricks. More often simple hacks than deep deliverability dives.
As this Mailgun help page points out, configuring your DNS TXT record in Namecheap when setting up a 2048-bit DKIM key involves nothing more than pasting the whole TXT record into the right place in their DNS management user interface. Usually, it's not that simple. You see, the public DNS key for 2048-bit DKIM is usually too long to fit in a single TXT record. Namecheap's system figures out automatically that if the TXT record is too long, and needs to be split into two chunks, then they'll just silently take care of that for you on the back end.
Normally I'm not a fan of things that transform DNS silently and behind the scenes, but I actually love and respect the design and implementation choice here. Kudos to the product manager or developer at Namecheap who came up with the idea and implementation of this. I wish more DNS control panels handled higher security DKIM key DNS similarly. It's not hard to split DKIM key records up, but it's not easy for the novice, either.
More on DNS record management and DKIM configuration from Namecheap. Though I find no mention of this clever hack in their documentation, Namecheap is the registrar for some of my domains. I've tested this myself and confirmed that it does indeed work.
