Could not connect to SMTP host. Message could not be sent

Question

When I sent email from server then it gives me two error -

SMTP Error: Could not connect to SMTP host. Message could not be sent. Mailer Error: SMTP Er

Answer 1

This question failed to do a basic search and missed a vital piece of information later mentioned in comments: the OP is using GoDaddy. GoDaddy is well known to block outbound SMTP, so any suggestions relating to switching port numbers or security protocols will not help. You need to read other questions on GoDaddy's mail handling, and read their support documentation, which will push you in the direction of using GoDaddy's mail servers (using securehosting domains) or via localhost as a relay to the same. All of this is also covered in the PHPMailer troubleshooting guide.

In future, search before posting, as per the SO guidelines.