Aravindhan: > * Telnet to the port 25 of the specific smtp server is working randomly > (sometimes works and sometimes not). > * Ping to the SMTP server is always successfull(Telnet to port 25 fails most > of the time).
Many ISPs block traffic to remote port 25. Possible solutions: - Connect to remote port 587 (submission) instead of remote port 25 (smtp), - Send mail through the ISP's relay host, so that your system does not have to connect to remote port 25, - Or get a business account from the ISP, that allows you to connect to remote port 25. Wietse