What does props.put("mail.smtp.host", host) in JavaMail do?

Question

Can anybody explain me what this line means in JavaMail API?

props.put("mail.smtp.host", host);

It is used to setup a mail server, but I don't understand it.

Answer 1

The String variable host contains the DNS name of a server that accepts connections on port 25 for SMTP. Adding this property to the props collection, which is in turn passed into Javamail, tells Javamail what host to send the mail to, initially.

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