ERROR using sc_mail_send. Need Help !!!

I never had any problems with sc_mail_send until now. I am using SCv8.1

When I try to load my php script to send a mail, I get this error message

Can anyone help out? Please ! [TABLE=“class: scErrorTable, align: center, cellpadding: 0, cellspacing: 0”]
[TR]
[TD=“class: scErrorTitle, align: left”]Error[/TD]
[/TR]
[TR]
[TD=“class: scErrorMessage, align: center”]stream_socket_client(): unable to connect to mail.schoolnet.com.ng:25 (A socket operation was attempted to an unreachable host. )[/TD]
[/TR]
[/TABLE]
Fatal error: Uncaught exception ‘Swift_TransportException’ with message ‘Connection could not be established with host mail.schoolnet.com.ng [A socket operation was attempted to an unreachable host. #10065]’ in D:\hshome qaglobal\schoolnet.com.ng_lib\prod hi rd\swift\classes\Swift\Transport\StreamBuffer.php: 269 Stack trace: #0 D:\hshome qaglobal\schoolnet.com.ng_lib\prod hi rd\swift\classes\Swift\Transport\StreamBuffer.php( 62): Swift_Transport_StreamBuffer->_establishSocketConnection() #1 D:\hshome qaglobal\schoolnet.com.ng_lib\prod hi rd\swift\classes\Swift\Transport\AbstractSmtpTrans port.php(113): Swift_Transport_StreamBuffer->initialize(Array) #2 D:\hshome qaglobal\schoolnet.com.ng_lib\prod hi rd\swift\classes\Swift\Mailer.php(79): Swift_Transport_AbstractSmtpTransport->start() #3 D:\hshome qaglobal\schoolnet.com.ng\blank_sendmai l\index.php(964): Swift_Mailer->send(Object(Swift_Message), Array) #4 D:\hshome qaglobal\schoolnet.com.ng\blank_sendmai l\index.php(1251): blank_sendmail_apl->controle() #5 {main} in D:\hshome qaglobal\schoolnet.com.ng_lib\prod hi rd\swift\classes\Swift\Transport\StreamBuffer.php on line [B]269

My code onExecute (using a blank on scriptcase)[/B]

// Email message body

{cus_body} = "
<div style =‘font:12px Arial,tahoma,sans-serif;color:#000000’> If you did not log on to your profile at the time detailed above, please call our Helpdesk Centre on: .
<br /><br /></div>
<div style =‘font:12px Arial,tahoma,sans-serif;color:#000000’> Thank you.
<br /><br /></div>" ;

// Email parameters
$mail_smtp_server = ‘mail.schoolnet.com.ng’; // SMTP server name or IP address
$mail_smtp_user = ‘info@schoolnet.com.ng’; // SMTP user name
$mail_smtp_pass = ‘iloveJesus’; // SMTP password
$mail_from = ‘info@schoolnet.com.ng’; // From email
$mail_to = ‘abbygad@gmail.com’; // To email
$mail_message = {cus_body};
$mail_subject = ‘ICP: LOGIN CONFIRMATION’;
$mail_format = ‘H’; // Message format: (T)ext or (H)tml
$mail_copies = ‘’; // List of the emails that will recieve the message
$mail_tp_copies = ‘’; // Type copies: BCC (Hiden copies) or CCC (Regular copies)
$mail_port = ‘25’; // Server port
$mail_tp_connection = ‘N’; // Connection security (S) or (N)

// Send email
sc_mail_send($mail_smtp_server,
$mail_smtp_user,
$mail_smtp_pass,
$mail_from,
$mail_to,
$mail_subject,
$mail_message,
$mail_format,
$mail_copies,
$mail_tp_copies,
$mail_port,
$mail_tp_connection);

PROBLEM SOLVED GUY !

Just a Port Issue…

Works very fine …

Hello, I have the same problem, it works perfectly on my local server, but in production environment it throws this error.

What port change did you do or how did you fix it, thanks