Testing mail servers with swaks

I hadn’t seen this tool before so I figured I would share. Swaks is the swiss army knife SMTP according to the homepage.

I’ve covered testing email from the command line before but this tool sure makes it easier.

swaks --to nick@tld --from nick@tld
*** MX Routing not available: requires Net::DNS.  Using localhost as mail server
=== Trying localhost:25...
=== Connected to localhost.
<-  220 cmdln-laptop ESMTP Exim 4.69 Thu, 16 Apr 2009 12:23:24 -0500
 -> EHLO cmdln-laptop
<-  250-cmdln-laptop Hello localhost [127.0.0.1]
<-  250-SIZE 52428800
<-  250-PIPELINING
<-  250 HELP
 -> MAIL FROM:<nick@tld>
<-  250 OK
 -> RCPT TO:<nick@tld>
<-  250 Accepted
 -> DATA
<-  354 Enter message, ending with "." on a line by itself
 -> Date: Thu, 16 Apr 2009 12:23:24 -0500
 -> To: nick@tld
 -> From: nick@tld
 -> Subject: test Thu, 16 Apr 2009 12:23:24 -0500
 -> X-Mailer: swaks v20061116.0 jetmore.org/john/code/#swaks
 -> 
 -> This is a test mailing
 -> 
 -> .
<-  250 OK id=1LuVJ6-0007ge-Jf
 -> QUIT
<-  221 cmdln-laptop closing connection
=== Connection closed with remote host.