I unable to send mail using outlook express. Our sever is running using Red Hat Linux 9.0. Mail incoming running ok, but mailing sending is problem. Pl. help me.

1. Most often this happens if you check the SPA check box. Make sure whether your server requires it or not.
   To confirm perform the following steps –
   1.Open outlook express
   2.From the tools menu select account
   3.From the Internet Account window select your account and click properties.
   4.Click on the server tab.
   5.Uncheck the box – Log on using secure password authentication
   6.Now send mail after downloading

   Also check SMTP address and server port number (default is 25) for outgoing message.

2. Verify the firewall or the sendmail is blocking your connections.

   telnet mail.example.com 25 -> You should get the the connection if not check your local & mail server firewall .

   Check mail server's log file for errors /var/log/maillog
   Update the question with the client and server's error messages.

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