I have a simple Wordpress site with the Contact Form 7 plugin. When submitting a form via the site it can takes in excess of 30 seconds to process.
Contact 7 uses Sendmail to deliver the emails (to an external address). Form submission never fails (but is very slow), the rest of the site is fine speed-wise.
Is there a way to profile Sendmail to find out what is taking so long?
The address it its sending to is a Google Mail account and always gets through.