I'm trying to configure PHP, Joomla, IIS6 and Windows Server 2003 to play ball with a new SMTP server that I've been told is replacing our existing setup. I've tried the following:
PHP: Set php.ini SMTP field to the new SMTP server IP Set port to 25
Joomla: Configured Global Config / Server Mail settings to same SMTP server IP, port as above
IIS: Restarted, recycled app pool
To no avail...
Weirdly, mail is sent fine internally, but external mail fails. A relay was set up previously that I've been told nothing about, not sure how to best start investigating this as a potential cause. PHP throws the following error when trying to use our contact form:
Any ideas of where to start looking? I don't have access to the SMTP server directly to check settings, though the client tells me it is configured correctly... Happy to provide more info if it helps.
(Apologies if this is better suited to SO, first post here)