Namecheap, Grr
Yesterday qaz.wtf was briefly unavailable. The domain registration expired. This happened for number of reasons, some mine, some I'm going to blame on Namecheap.
First, what I did wrong: I put an overly strong spam filter rule in place that was marking all mail from them as spam. In particular the rule was indiscriminate about source when the domain was (a) using registrar-services.com for DNS and (b) using DNS with a SOA serial number that parsed as less than a day old. In fairness, it is a very effect rule. Here's a sample of the domains from the last 100 messages that deleted:
mail[.]forhealth[.]bar Oct 2020; medicarepro[.]xyz Oct 2020; diabetesfrepro[.]xyz Oct 2020; mail[.]diabetes2type[.]casa Oct 2020; carbosfix[.]xyz Oct 2020; mail[.]pocketdrone[.]work Oct 2020; goldplatedscoin[.]xyz Oct 2020; mail[.]fevertrhermal[.]casa Oct 2020; whowhpremium[.]xyz Oct 2020; mail[.]dxpgaget[.]work Oct 2020; mail[.]machinepower[.]bar Oct 2020; mail[.]trackerss[.]bid Oct 2020; royalbalance[.]cam Oct 2020; mail[.]pocketdron[.]work Oct 2020; stopsqribble[.]bid Oct 2020; shinehead[.]bid Oct 2020; mail[.]neckmassager[.]casa Oct 2020; audigrow[.]bid Nov 2020; mail[.]learnpiano[.]work Nov 2020; mail[.]heatromwave[.]casa Nov 2020; BayAreaTechSummit[.]com Nov 2020; mail[.]waxremove[.]casa Nov 2020; mail[.]gpstrack1[.]work Nov 2020; mail[.]gps1track[.]work Nov 2020; mail[.]zoom2dipro[.]casa Nov 2020; mail[.]strategys[.]bid Nov 2020; lifeprotect[.]uno Nov 2020; oxyrobot[.]bid Nov 2020; survivlife[.]uno Nov 2020; survivlife[.]uno Nov 2020; mail[.]musichall[.]casa Nov 2020; mail[.]discovery1[.]casa Nov 2020; mail[.]diabetesremedy[.]work Nov 2020; mail[.]zoomzoom[.]work Nov 2020; yourbusinesstips[.]biz Nov 2020; mail[.]goodhealth[.]casa Nov 2020; vanses[.]icu Nov 2020; mail[.]dailmulti[.]bid Nov 2020; mail[.]zoompro[.]casa Nov 2020; mail[.]heatpad[.]co Dec 2020; mail[.]foodgrow[.]bid Dec 2020; mail[.]shinehead[.]bid Dec 2020; mail[.]bagtrack[.]work Dec 2020; rewardtoshop[.]com Dec 2020; rivalo[.]com Dec 2020; rivalo[.]com Dec 2020; mail[.]techvisions[.]bid Dec 2020; mail[.]vestwoding[.]icu Dec 2020; brutualloss[.]icu Dec 2020; drawlace[.]buzz Dec 2020; 247blindco[.]co[.]uk Dec 2020; 247blindco[.]co[.]uk Dec 2020; 247blindco[.]co[.]uk Dec 2020; 247blindco[.]co[.]uk Dec 2020; mail[.]easysurveyrewards[.]best Dec 2020; zind[.]us Dec 2020; zind[.]us Dec 2020; herpesyl[.]icu Dec 2020; mail[.]digitalbrand[.]icu Dec 2020; mail[.]offertrend[.]icu Dec 2020; offerworld[.]icu Dec 2020; offerworld[.]icu Dec 2020; mail[.]offerhad[.]icu Dec 2020; healingsystem[.]icu Dec 2020; myshedesplan[.]icu Dec 2020; boosterday[.]best Dec 2020; brutualloss[.]icu Dec 2020; mail[.]shinehead[.]bid Dec 2020; mail[.]remedypro[.]us Dec 2020; tactnutri[.]icu Dec 2020; mail[.]feverfix[.]icu Dec 2020; mail[.]sugartonic[.]icu Dec 2020; mail[.]mechanism[.]icu Dec 2020; mail[.]ecomdeals[.]icu Dec 2020; mail[.]dealsbreeze[.]icu Jan 2021; mail[.]vestwoding[.]icu Jan 2021; mail[.]heatsawy[.]icu Jan 2021; mail[.]capitalreward[.]icu Jan 2021; mail[.]capitalreward[.]icu Jan 2021; mailserviceemailout1[.]namecheap[.]com Jan 2021; mail[.]energyy[.]bid Jan 2021; mail[.]speechrewards[.]icu Jan 2021; mail[.]usonly[.]bid Jan 2021; mail[.]certifiedstate[.]cam Jan 2021; thecsi[.]com Jan 2021; coloradocareerproject[.]com Jan 2021; mailserviceemailout1[.]namecheap[.]com Jan 2021; mail[.]healthrequired[.]work Jan 2021; mail[.]doorbellclub[.]work Jan 2021; mail[.]hollyb1ook[.]work Jan 2021; mail[.]safehealth[.]work Jan 2021; mail[.]remedypro[.]us Jan 2021; mail[.]yourtone[.]casa Jan 2021; mail[.]healthmonitor[.]casa Jan 2021; mailserviceemailout1[.]namecheap[.]com Jan 2021; mail[.]voidemodems[.]casa Jan 2021; mail[.]entend4ded[.]casa Feb 2021; mailserviceemailout1[.]namecheap[.]com Feb 2021; slotcrime[.]guru Feb 2021; mailserviceemailout1[.]namecheap[.]com Feb 2021
There are six messages, from two domains, that are inappropriately caught there. One of those was quasi-spam. Looking at the last 1000, there's only one more "ham" message caught. Seven out of a thousand is a pretty good track record, but when five of those seven are important that does sting. That's the part that's my fault.
Now onto Namecheap.
Almost all of my hostnames at Namecheap are set up to autorenew, with care selecting the ones that are not. At the same time, I have a credit card on file at Namecheap, and it is selected as my default payment method. I don't remember when, but I likely changed my card on file in late 2020, when I had a bunch of things to renew in the October to November period. I know I have twentish pieces of email from them in that period that didn't get deleted.
So it turns out that having autorenew selected and having a card on-file and "default is not sufficent to actually autorenew stuff. You also need to find the hidden configuration page (it is not the regular "edit card" page) that selects a card as enabled for autorenew. Serious, WTF?. Why isn't it with all the other configuration for a credit card?
Anyway, I use my own site regularly, and noticed the outage quickly. It did take a while for all DNS servers to get the message. I was seeing Cloudflare (1.1.1.1), eg, reporting the Namecheap parking page long after Google (8.8.8.8) had it restored.
Grrr.