Hello! I have an XAMPP server on Win10 running the updated Mercury/32 v4.8.
DOMAIN - https://www.jvond.com
My Let's Encrypt certificates seem to work just fine on my sites and server but I've been having trouble with my email server and gmail.
I'm able to receive email into my SMTP with SSL enable with all apps BUT gmail. Gmail rejects it at the STARTTLS. I can get gmail to work with unsecure settings but then I'm flagged by the main servers like yahoo will temporary deffer me for 24hours and gmail with spam box everything, so I'm desperate to run secure headers, at least..
I have multiple domains on my server so I tried to make a dedicated certificate for mail.jvond.com to see if that would help and it's still getting rejects from gmail. Here's an image of my server stats. You can see gmail making multiple attempts to deliver queued test msg's, and below those is a yahoo msg that made it through and delivered.
I've actually been in an trouble shooting email chain with Dave the Mercury dev. about this issue and as we progress he did recommend a different CA but I'd prefer to use Let's Encrypt.
I'm not a dev at all, more like a butthead.
Any suggestions or help is much appreciated. I'll be sure to help others in the process. Thanks! ~J