Hi all
I need to perform a tenet check on port 25 on a mail server, and I came
across this:
telnet mail.server.com 25
Trying 1.2.3.4...
Connected to mail.server.com.
Escape character is '^]'.
220 mail.server.com ESMTP Exim 4.52 Wed, 27 Jul 2005 14:44:51 +0200
mail.server.com
250 mail.server.com Hello mymail.mymailserver.com [10.11.12.13]
mail from:<abc@???>
250 OK
rcpt to xyz@???
500 unrecognized command
rcpt to:<xyz@???>
550-Verification failed for <abc@???>
550-Called: 192.195.66.32
550-Sent: RCPT TO:<abc@???>
550-Response: 550 No such address
550 Sender verification callout failed.
So basically it does mail from: lookup, before accepting the mail.
Would anyone know how to achieve this.
I bet its going to be something simple, but if someone would be so kind
as to share how to do this, it would be great fully be appreciated.
Kind Regards
Brent Clark
