I'm not what familiar with XAMPP so apologies for the basic question.
We have an MS Exchange Server. Can I send emails to Exchange from php via XAMPP webserver without having a mail server (i.e. Mercury Mail Server) installed, but using the webserver as an Exchange client (like outlook)?
Previously our webserver was installed in IIS and used SMTP service to send mail, but since moving to XAMPP on a new server the mail no longer works. Mercury Mail Server is not installed.
There is a receive connector, which worked before, in Exchange. but I get the error "authentication failure [SMTP: STARTTLS failed (code: 220, response: 2.0.0 SMTP server ready)]" now.
Was the IIS SMTP service acting as a mail server previously? Can I install the SMTP service on the new webserver or is this I assume part of the Mercury Mail Server install?