You send a mail to an address - and then need to click "View Results". This sends you to "https://dkimvalidator.com/results" with a message of "I haven't received an email recently to....".
They do catch Ctrl-F5 keypress for reload. But if you just go to the URL bar and press enter you are returned to the front page with a new ID. You can paste the old address and then get the results but not a nice experience.
Personally I have been using https://www.appmaildev.com/en/dkim most frequently as it allows direct input rather than sending mail which is often more convenient (ex: I am looking at a failing message).
My only complaint is that for direct input it will say passed if any DKIM signature is valid, instead of reporting each. This often results in an AWS SES signature hiding the result of the one for the correct domain.
0.0 RCVD_IN_ZEN_BLOCKED_OPENDNS RBL: ADMINISTRATOR NOTICE: The query to zen.spamhaus.org
was blocked due to usage of an
open resolver. ...
FYI: you'll need to run your own local resolver if you want to perform DNSBL queries with Spamhaus. Unbound (https://nlnetlabs.nl/) is an excellent and easy-to-configure choice for solving this problem.
Even running your own local resolver, if you generate enough traffic they'll still block you. I think their definition of open relay is based on traffic volume.
(which is their right, of course - just a warning that might help someone not find this out at 4am like I did)
Yes, because Spamhaus is a commercial enterprise. My own experience with their "free tier" limit is that it's generous and sufficient for personal use.
Self-hosted email is basically a thing of the past, because you can't do anything about IP-based blacklists, and they are in widespread use.
This also rather implies that all these mechanisms which are available to hosters, DMARC and SPF and what-not, are not actually adequate.
I used to self-host, and I still host my own POP, but I now pay 5 USD a month for a commercial SMTP account, just to use their SMTP server to send email, so that I can send from their IP rather than mine.
> "Self-hosted email is basically a thing of the past, because you can't do anything about IP-based blacklists ..."
It's certainly a hassle when using some of the large providers who don't care to keep tidy premises, but absolutely neither impossible nor a thing of the past.
You send a mail to an address - and then need to click "View Results". This sends you to "https://dkimvalidator.com/results" with a message of "I haven't received an email recently to....".
They do catch Ctrl-F5 keypress for reload. But if you just go to the URL bar and press enter you are returned to the front page with a new ID. You can paste the old address and then get the results but not a nice experience.
So. Nice domain name and points for effort. But a far cry away from https://www.learndmarc.com/ and the old dog https://www.mail-tester.com/ which both are really great. Less battery included but MxToolbox Supertool is still preferable to this (https://mxtoolbox.com/SuperTool.aspx).
Even shivdeepaks weekend project (https://dmarcverified.com) is more straight-forward and to the point.
So not to be a party pooper but as this was not a "Show HN" this is not really worth your time.