Elgg core User Validation by Email plug-in.

Apologies if this in the wrong group but I am having problems with the User Validation by Email Elgg core plug-in which is not sending email in tests I'm running.

The PHP mail() function has been disabled by my hosting company due to security concerns on their part and after discovering this problem, by using a third-party PHP mail suite on another site I run on the same servers, the email functionality works as it uses SMTP authentication.

I have looked for an Elgg Plugin which would do the same thing using SMTP authentication but cannot find one.

Many thanks for any suggestions on this.