[consulting] SMTP/Mime Mail modules

[Mark Hope]

We're currently using Simplenews, along with the Mime Mail module for  
a number of client HTML newsletters. We're running into the usual  
spam filtering problems and would like to use SMTP, directly through  
the clients mailserver.

MimeMail and SMTP modules don't look to be compatible.

Can anybody offer any advice on this? Has anybody looked at making  
the two compatible?
Issue: http://drupal.org/node/66711

I suppose the other option is to use SPF and hope that works?

Regards
Mark