I'm busy going through all of my domains on my server changing over from php mail() function to smtp authentication. All is going swimmingly apart from I've hit a snag with a couple of domains where they host their emails on their own internal server. An MX record on my web server is pointing their mail to their own server. This means I can't use my standard smtp authentication.
So basically 2 questions here:
- should I get them to set up an email username and password on their own server and will that authenticate?
- is their any other way of doing this that doesn't require my clients to get involved? The odd client might be stubborn and rather than help with setting up point 1 above, they may just move their hosting elsewhere.
Any help would be great