My LE cert expired few weeks ago, and since then SMTP emails don’t work anymore. In Cloudflare I had to switch SSL to Full to bring back my website (it was Strict )
Now with self-signed cert I tried to change SMTP port and to use STARTTLS as shown on Emails > List, but didn’t work.
While sending emails SMTP return a timeout error - using ThunderBird and web-mail.
The line below return a ssl wrong version, I guess is it due to the self-signed cert?
How do I get back my SMTP mail? (I don’t want to use unsecure port 25 )
openssl s_client -starttls smtp -showcerts -connect mail.website.com:587 -servername mail.website.com
40674E1AF57F0000:error:0A00010B:SSL routines:ssl3_get_record:wrong version number:…/ssl/record/ssl3_record.c:354:
no peer certificate available
No client certificate CA names sent
SSL handshake has read 244 bytes and written 351 bytes
New, (NONE), Cipher is (NONE)
Secure Renegotiation IS NOT supported
No ALPN negotiated
Early data was not sent
Verify return code: 0 (ok)