Full Disclosure mailing list archives
Re: VeriSign's fake SMTP server for SiteFinder
From: fulldisclosure () varshaad com
Date: Mon, 22 Sep 2003 14:29:07 -0700
They put a bogus SMTP server in place since most MTA's are designed to fall back to an A record for the domain if no MX records can be found. So if they didn't put up the SMTP server then mail would sit in the MTA's queue waiting for delivery until it finally timed out as undeliverable (which on most MTA configuration can take days).
Hello, Does anyone know why Verisign has set up a fake SMTP server at their SiteFinder service to bounce email messages sent to misspelled or expired domain names? The fake SiteFinder SMTP server gives the impression that it is a real SMTP server and happily accepts "To" and "From" email addresses before rejecting a misdirected email message. I don't quite understand what technical issues Verisign is trying to solve here with a fake server. Any guesses? I've attached an early email from Verisign that gives a bit more information about how this fake SMTP server operates but not why it is needed. Richard M. Smith http://www.ComputerBytesMan.com
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Current thread:
- VeriSign's fake SMTP server for SiteFinder Richard M. Smith (Sep 22)
- Re: VeriSign's fake SMTP server for SiteFinder Pamela Patterson (Sep 22)
- Re: VeriSign's fake SMTP server for SiteFinder Brent J. Nordquist (Sep 22)
- Re: VeriSign's fake SMTP server for SiteFinder Michal Zalewski (Sep 22)
- Re: VeriSign's fake SMTP server for SiteFinder Damian Gerow (Sep 22)
- Re: VeriSign's fake SMTP server for SiteFinder fulldisclosure (Sep 22)
- Re: VeriSign's fake SMTP server for SiteFinder Dan Rowles (Sep 22)
- Re: VeriSign's fake SMTP server for SiteFinder Jonathan A. Zdziarski (Sep 22)
- Re: VeriSign's fake SMTP server for SiteFinder Joshua Levitsky (Sep 22)
- Re: VeriSign's fake SMTP server for SiteFinder Valdis . Kletnieks (Sep 22)
- Re: VeriSign's fake SMTP server for SiteFinder Jonathan A. Zdziarski (Sep 22)
- Re: VeriSign's fake SMTP server for SiteFinder Nate Hill (Sep 22)
- <Possible follow-ups>
- RE: VeriSign's fake SMTP server for SiteFinder Joshua Thomas (Sep 22)
- Re: VeriSign's fake SMTP server for SiteFinder Joshua Levitsky (Sep 22)
- Re: VeriSign's fake SMTP server for SiteFinder Geoincidents (Sep 22)
- Re: VeriSign's fake SMTP server for SiteFinder Ng Pheng Siong (Sep 22)
- Re: VeriSign's fake SMTP server for SiteFinder Joshua Levitsky (Sep 22)
- Re: VeriSign's fake SMTP server for SiteFinder Damian Gerow (Sep 22)