Why are emails not coming through sendmail?

Question

PHP

On Windows Server 2003, I installed Apache, PHP, configured sendmail, but the letters do not come. What could be the problem?

Answer 1

Try using hMailServer as your mail server .

Answer 2

What could be the problem?

The potential causes are myriad, from poorly written code, a misconfigured server, to the Magical Powers of Electricity ™.
In order to understand, you need to read the logs.