Sending SMTP test message error

[tung2000]

I can't send test message using SMTP. I got the error as follows :
Unable to connect to SMTP Host 'mailhub.wharftt.com': (13) Permission denied

Then, I try to telnet to Cacti and then telnet to SMTP server port 25 to test SMTP operation by SMTP commands like helo, mail from: rcpt to:, data. I can get the e-mail.

Why Cacti can't send the test mail? Please advise.

Thanks!

[Swiftie]

This is more than likely an authentication issue for the SMTP server. Could be a required username and password to authenticate or wrong port.

[tung2000]

My SMTP server won't require authentication and use port 25.

[Swiftie]

My SMTP server won't require authentication and use port 25.

Can you tey telnet to the server mailhub.wharftt.com port 25?

[tung2000]

Yes, I can

[villieb]

Hi - did you get this working? I'm experiencing the same issue...

[nandozzi]

I have encountered the same problem and if you have a mail server you need to accept Unknown Client.
Cacti use a non standard email client and a lot of mail server doesn't accept it.
It's not a problem of authentication, but simple your email client is not recognized.
If you try to use the same settings with a client like Outlook, i am sure you haven't any problem

[nandozzi]

Admin please delete this message.... It's a double...

[villieb]

I found disabling SELINUX did the trick...

Run this command to see if it is running:

selinuxenabled && echo enabled || echo disabled

To disable SELINUX temporarily:
echo 0 > /selinux/enforce

To make the disabling of SELINUX permanent, edit /etc/selinux/config and change the line SELINUS="enabled" to disabled

[gandalf]

There are SELinux bolleans that rule sending SMTP bia HTTP. You may want to dive into this
R.