Penetration Testing mailing list archives
RE: TELNET and SMTP
From: "Richard Lane" <lane.security () gmail com>
Date: Sun, 8 Jul 2007 14:58:57 +1000
Zach, Just out of interest, you state that you weren't able to send an e-mail. Were the source or destination addresses within your client's domain? Try sending an "internal" email and see if you get the same response. If not, then this can be used to send spoofed mail within the organisation.... e.g. from HR to an employee supposedly firing them, or from the CEO to the cute secretary in one of the departments harassing her sexually (the list goes on). -----Original Message----- From: listbounce () securityfocus com [mailto:listbounce () securityfocus com] On Behalf Of wymerzp () sbu edu Sent: 07 July 2007 22:31 To: pen-test () securityfocus com Subject: TELNET and SMTP Hello all, I'm looking at a client's site and they have unprotected access to port 25 (i.e. I can telnet to it and issue commands). When I attempt to send an email I get this message '553 Relaying is not supported'. My question is two-fold: 1)What could I do with the unprotected SMTP access if I can't send mail. 2)What purpose do you believe that the SMTP service provides? Does the SMTP simply recieve!?!? Thank you all, Zach ------------------------------------------------------------------------ This List Sponsored by: Cenzic Swap Out your SPI or Watchfire app sec solution for Cenzic's robust, accurate risk assessment and management solution FREE - limited Time Offer http://www.cenzic.com/wf-spi ------------------------------------------------------------------------ ------------------------------------------------------------------------ This List Sponsored by: Cenzic Swap Out your SPI or Watchfire app sec solution for Cenzic's robust, accurate risk assessment and management solution FREE - limited Time Offer http://www.cenzic.com/wf-spi ------------------------------------------------------------------------
Current thread:
- TELNET and SMTP wymerzp (Jul 07)
- RE: TELNET and SMTP Shenk, Jerry A (Jul 07)
- Re: TELNET and SMTP StaticRez (Jul 07)
- Re: TELNET and SMTP Marco Ivaldi (Jul 09)
- Re: TELNET and SMTP Hans-J. Ullrich (Jul 07)
- Re: TELNET and SMTP rajat swarup (Jul 07)
- RE: TELNET and SMTP Richard Lane (Jul 08)
- Re: TELNET and SMTP A. Tom McFrog (Jul 08)
- Re: TELNET and SMTP AdamT (Jul 08)
- <Possible follow-ups>
- RE: TELNET and SMTP Thomas W Shinder (Jul 07)
- RE: TELNET and SMTP Levenglick, Jeff (Jul 09)
- RE: TELNET and SMTP Russell Butturini (Jul 09)
- RE: TELNET and SMTP Levenglick, Jeff (Jul 09)
- Re: TELNET and SMTP Levenglick, Jeff (Jul 08)