JavaMail: Changing mail.smtp.host

[Rik Sweeney]

Hi,

I was wondering if it's possible to change the mail.smtp.host after you've constructed the MimeMessage. The reason I ask this is because I need to support a failover SMTP server. At the moment I'm creating a new MimeMessage and copying everything from the old message into the new one:

props = System.getProperties();
 
props.put("mail.smtp.host", host);
 
session = Session.getDefaultInstance(props, null);
 
msg = new MimeMessage(session);

Is there a better way of doing this or do I have to construct a new MimeMessage?

Thanks

Richard