I’m helping with the OP’s problem.
The mail server settings are fine, we can send/receive up to 10MB files. I was able to get the script to work on a development server just fine (RHEL environment). However, on the production server, no workee.
I learned that the server is Windows based (IIS 7.5, PHP 5.3). I can tell in phpinfo that upload_max_filesize is set at 100MB. I was able to upload a 1.4 MB file fine. But it bombs out with attachments over 1.5 MB. It isn’t a “File too large” error, but instead “Failed to send your message. Please try later or contact the administrator by another method.”
Is there an IIS setting that would override the file limit? Is there a way to show errors when the script doesn’t run?
