Security Basics mailing list archives
Re: detect ISP's legitimate SMTP server
From: James Light <jlight () srcit stevens edu>
Date: Mon, 7 Mar 2011 16:04:22 -0500
On Thu, Mar 03, 2011 at 11:24:15AM +0200, Martin T wrote:
I was abroad in Germany with my Nokia n900 and I needed to send few emails over the HSDPA connection. The problem was, that I had no idea about ISP's SMTP server and the one I use in my country did not work(most likely ISP allows to use only the legitimate ones). I detected the ISP using the IP address and whois information about it and finally gave them a call. However, is there some sort of smart way to detect legitimate SMTP servers in ISP network? regards, martin ------------------------------------------------------------------------
Did you try to query DNS for the mail server? Set the type of the request to MX. i.e. to find the hostname of the SMTP server for 'netmeister.org': $ dig -t MX netmeister.org or $ nslookup -type=MX netmeister.org If you have 'dig' or 'nslookup' available. -JL -- ------------------------------------------------------------------------ Securing Apache Web Server with thawte Digital Certificate In this guide we examine the importance of Apache-SSL and who needs an SSL certificate. We look at how SSL works, how it benefits your company and how your customers can tell if a site is secure. You will find out how to test, purchase, install and use a thawte Digital Certificate on your Apache web server. Throughout, best practices for set-up are highlighted to help you ensure efficient ongoing management of your encryption keys and digital certificates. http://www.dinclinx.com/Redirect.aspx?36;4175;25;1371;0;5;946;e13b6be442f727d1 ------------------------------------------------------------------------
Current thread:
- detect ISP's legitimate SMTP server Martin T (Mar 03)
- Re: detect ISP's legitimate SMTP server RPLists (Mar 07)
- Re: detect ISP's legitimate SMTP server James Light (Mar 07)
- <Possible follow-ups>
- Re: Re: detect ISP's legitimate SMTP server Savvy95 (Mar 08)
- Re: Re: detect ISP's legitimate SMTP server Vedantam Sekhar (Mar 10)
- Re: Re: detect ISP's legitimate SMTP server Ansgar Wiechers (Mar 11)
- Re: Re: detect ISP's legitimate SMTP server vladimir pajuelo (Mar 10)
- Re: Re: detect ISP's legitimate SMTP server Vedantam Sekhar (Mar 10)