On a linux box type these two commands
|
1 2 |
echo -ne 'password' | base64 |
The command will return with the username and password in base64 format.
Example:
|
1 2 3 4 |
dXNlcm5hbWVAZG9tYWluLnByZWZpeA== root@Linux-homeserver:~# echo -ne 'password' | base64 cGFzc3dvcmQ= |
So now you need to telnet with OpenSSL to the mailserver:
|
1 |
openssl s_client -debug -starttls smtp -crlf -connect mailserver.kennethdalbjerg.dk:465 |
After you have connection, you need to present yourself
Example:
|
1 |
ehlo host.kennethdalbjerg.dk |
Some mailserver, do check if the ehlo is you corrert PTR record, for the IP address you are coming from, but most do not.
The mail server will return with:
250 mailserver.kennethdalbjerg.dk Hello dell1 [10.10.10.10]
You will now try to authenticated you self, if you don’t need to AUTH, please go to last code example in this blog.
|
1 |
AUTH LOGIN |
And the mailserver will return with:
VXNlcm5hbWU6
Here you type you username in base64 format
|
1 |
dXNlcm5hbWVAZG9tYWluLnByZWZpeA== |
And the mailserver will return with:
UGFzc3dvcmQ6
Please now type you password in base64 format
|
1 |
cGFzc3dvcmQ= |
The server should now return with:
235 2.7.0 Authentication successful
After this you type normal email request to send an email
Example: (You should not type the line starting with a >, it are what the mailserver return to you.
|
1 2 3 4 5 6 7 8 9 10 11 |
mail from: FromMailAddress@domain.prefix > 250 2.1.0 Sender OK rcpt to: ToMailAddress@domain.prefix > 250 2.1.5 Recipient OK data > 354 Start mail input; end with <CRLF>.<CRLF> test . > 250 2.6.0 <604863cb-3dcc-4cee-9c1a-77fb6d951d43@mailserver.kennethdalbjerg.dk> [InternalId=9753870729240, Hostname=mailserver.kennethdalbjerg.dk] 1203 bytes in 1.581, 0,743 KB/sec Queued mail for delivery quit >221 2.0.0 Service closing transmission channel |