Poonam

Hi guys , I am facing issues with php mails. I have iis and SMTP configured on the sever . Mail send and receive was working properly. But suddenly not able to receive email. I have tried simple php email script . it shows email sent but not received. I have tried php mailer also but same happened. Please reply if somebody could help me out. i need to resolve this issue as soon as possible. I have iis 6 and windows 2012 and php 5.5