This is why email clients require you to specify both an incoming and an outgoing email server.
SMTP is adelivery protocol, designed to push email messages to a target server.
The server requires a username and password to authenticate a client.
TLS/SSL are cryptographic protocols for secure communication over computer networks.
They are based on the exchange of X.509 certificates and public keys for encrypting and decrypting messages.
Digital certificates are issued by a certificate authority (CA) trusted by both parties involved in the communication.
This directly affects the quality of your service, because your clients or employees rely on email every day.
If the server uses TLS/SSL security, it is also important to monitor the certificate expiration date.
