A remote system has attempted to start a secure connection with GMS by issuing the ESMTP command STARTTLS. The remote system did not comply with the Internet Standard for SSMTP so GMS has issued a Syntax Error to the remote server/client.
In this case, thread Undefined was processing a connection from Undefined which gave the command
GMS Secure Socket Layer responded with
In order to resolve this you will need to contact the administrator of Undefined and ask them to contact their vendor to ensure that their system is Internet Standard compliant.
- How do I set up Secure SMTP (STARTTLS)?
- Which Type of SSL Certificate should I choose?
- Can I provide secure access to email?
- How do I contact the owner of a remote server?
Keywords:STARTTLS SSL SSMTP RFC2487