Yahoo nline dating Adut chat america
The 'sendmail' executable which PHP uses on Linux/Mac (not Windows) expects "\n" as a line separator.
Multiple extra headers should be separated with a CRLF (\r\n).
Often it's helpful to find the exact error message that is triggered by the mail() function.
While the function doesn't provide an error directly, you can use error_get_last() when mail() returns false.
On Windows, however, you should use "\r\n" because PHP is using SMTP in this situation, and hence the normal rules of the SMTP protocol (not the normal rules of Unix piping) apply.
I migrated an application to a platform without a local transport agent (MTA).
So these parameters are safe against injection of additional headers.