SMTP Authentication

[GdP]

Hi,

 

I have been wondering about this.

With most (all?) email accounts you have to authenticate when reading your POP mail. I would expect the same for sending messages using smtp, but most smtp servers do not require you to login.

Some smtp servers are configured to check if you are on the same network as them (you get a "relaying not allowed" message if not).

 

It seems that the smtp servers of TCH are completely open. I am a bit worried about this, wouldn't spammers have an easy time using 'our' smtp servers???

 

Thanks for your time,

Gert

[GdP]

BTW, after I posted this message, I received a page with the message "Failed at Mail command".

 

Gert

[Nick_]

GdP,

 

Try to send SMTP through another server other than yours

 

You can only use the SMTP server if you either login, or use the same IP as you did for checking POP3.

[GdP]

Nick,

 

Just to make sure I understand this correctly:

 

Say I am on a dialup account, with a new IP after every reboot.

If I reboot my computer, and immediately send a message to 'my' smtp server (mail.amazingfile.com) without first checking my email it will fail?

 

If, on the other hand, I reboot, check my mail (using pop authentication), and then send an email it will work?

 

If this is correct, then it is nicely configured! I feel safe again.

 

Gert

[Nick_]

Yep,

 

This is how it's intended, you should have to do a POP3 auth first, or use your POP3 login information (I usually use pop3 login info)

[GdP]

Thanks!

 

Gert

[Madmanmcp]

See if this helps.

 

http://www.abuse.net/relay.html