Hello, I can send and receive all emails except that I can’t receive emails from gmails. I’m getting the following error about email delivery failure from sent email to server.
The response was:
TLS Negotiation failed: FAILED_PRECONDITION: starttls error (71): 94771312888008:error:10000417:SSL routines:OPENSSL_internal:SSLV3_ALERT_ILLEGAL_PARAMETER:third_party/openssl/boringssl/src/ssl/tls_record.cc:594:SSL alert number 47
Please let me know the fix, I’m dying because of it :\
Hi eris, I’m using cloudflare and let’s encrypt ssl for mail and domain. But I tried multiple ways remove ssl and disabling ssl on cloudflare too but did not solve the issue. Other old users have no issues, they can receive emails from gmail with no errors. Please help me as it’s very important.
To use Cloudflare on a mail domain, you need to open that domain from proxy service and make the IP public. Then, you could only use the DNS service from Cloudflare for that IP <—> domain.
Thereafter, all the email trafic will not be blocked or not be forwarded and processing by Cloudflare on that mail domain shall stop. Most of the configuration shall not be applicable.
Here, Cloudflare shall only protect your domain through DNS IP Firewall. No more and no less. It shall (dare not) interfere in any part of mail traffic on ports 25, 465, 587, 993, 995, etc. Once you proxy the traffic, these ports are blocked thereafter and it changes to web services.
Send a email from gmail to your server and check what the headers say. With that we are unable to debug. Also create a new topic this topic over 1,5 years old