Ethical Hacking Learn to find vulnerabilities before the bad guys do! Gain real world hands on hacking experience in our state of the art hacking lab. Course designed and taught by expert instructors with years of penetration testing experience. 12 student maximum in every class. Certification attempt included in every package. | Computer Forensics Training at InfoSec Institute Gain the in-demand skills of a certified computer examiner, learn to recover trace data left behind by fraud, theft, and cybercrime perpetrators. Discover the source of computer crime and abuse at your organization so that it never happens again. All of our class sizes are guaranteed to be 12 students or less to facilitate one-on-one interaction with one of our expert instructors. |

| Subject: | Re: Sendmail/Blacklists rejecting authenticated users |
|---|---|
| Date: | Thu, 12 Jan 2006 03:10:49 +0000 |
Michael Knox wrote:
Quick question regarding dnsbl's... The other day I was in the Pittsburgh airport trying to send an email using their free wifi. Unsurprisingly this network's ip range is listed on a few of the blacklists. This resulted in my mail server rejecting my connection when I tried to send some emails. Does anyone know how I can configure sendmail/procmail to not check the IP addresses against the dnsbls for authenticated users?
The dnsbl feature is implemented in the check_relay ruleset, which is called as soon as an inbound SMTP connection is made, before authentication has occurred. If it rejects the connection, you won't get a chance to authenticate. You would need to re-implement the dnsbl feature in a later ruleset, e.g. check_rcpt (this is the ruleset normally used to control relaying). If you need to access any of your services remotely, you may be better off implementing a VPN. -- Glynn Clements <glynn@gclements.plus.com>
| <Prev in Thread] | Current Thread | [Next in Thread> |
|---|---|---|
| ||
| Previous by Date: | Re: Sendmail/Blacklists rejecting authenticated users, Scott Gifford |
|---|---|
| Next by Date: | Re: Sendmail/Blacklists rejecting authenticated users, Kurt Seifried |
| Previous by Thread: | Re: Sendmail/Blacklists rejecting authenticated users, Scott Gifford |
| Next by Thread: | Re: Sendmail/Blacklists rejecting authenticated users, Kurt Seifried |
| Indexes: | [Date] [Thread] [Top] [All Lists] |