cPanel Forums

Your message did not reach some or all of the intended recipients.



Subject: testing

Sent: 2/03/2022 12:39 PM



The following recipient(s) cannot be reached:



'[email protected]' on 2/03/2022 12:39 PM

503 Valid RCPT command must precede DATA

this is not an outlook issue. it is whm server issue with Open SSL.

"openssl_options = +no_sslv2 +no_sslv3 +no_tlsv1 +no_tlsv1_1".

I dont understand this error as it was all working one day then suddenly it stops...

503 error sending (it's not email client, it is whm server side).