http://Linux-Sec.net Hardening-Tightening Security_Policy Hardening-HOWTO Linux Distros Distro Patches Kernel-Patches Dedicated Servers Firewalls DNS Servers Mail Servers Web Servers Turn-Off Daemons Tighten Inetd Services Top-10 Vulnerabilities Top-7 Security Mistakes Top-10 Vulnerabilities Top-20 Most Critical Vulnerability Top-10 Virus Scans/Attacks Stats Top-10 Attacks Hacked Servers One Minute Audits OpenPorts Audit AntiVirus - AntiSpam Anti-Spam Anti-Virus spam.wav Wireless [In]Security Sniffers Security Tools SSH_SSL Firewalls MailServer FileSystem VPN Port Scan Detectors IDS Tools LogFile Analysis Ethernet Monitoring Server Monitoring Tracking & Forensics Hackers Tools Audit Tools Port Scanners Hacking Tools DDOS Tools Sniffer Tools Spoof Tools Exploits & Vulnerbilities Wireless Wireless [In]Security Misc Statistics Linux/BSD Distros Links,Articles,WatchDogs Security Mailing Lists/FAQs Liability Insurance 1U Rackmount Chassis Custom-Chassis.com Linux-1U.net 1U-ITX.net ITX-Blades.net Small PC cases Mini-Box.net Wrap-Box.net Wrap-OS.net Wan-Sim.net Linux-Consulting.com Linux-CAE.net Linux-Sec.net Linux-Boot.net Linux-Backup.net Linux-Wireless.org Linux-Office.net Linux-Video.net Linux-VOIP.net Linux-Jobs.net Linux-Diff.net 1U-Raid5.net Linux-Howto.net Spam Reporting Free Linux CDs ISO9660.org Distro-CD.org Patch-CD.org Contact Linux is a registered trademark of Linus Torvalds More Linux Legalese

Linux-Sec.net/Mail Secure Mail Server Secure Pop3 Mail Servers MTA Secure-MTA Wireless-MTA WebMail Servers AntiVirus MIME Detach AntiSpam Sendmail Sendmail Install-HOWTO Example Sendmail Config FIles OpenRelay RBLs Filters RFCs Laws Mail Headers Mail Log Analyzers Monty-Python Songs Mail/OpenRelay Mail Server Open Relay Testing Simplified open relay test of Mail.Suspect.com root# telnet Mail.Suspect.com 25 You want to send all your "spam" mail thru Suspect.com's T1/T3 internet connection Pick on www.suspect.com or mail.suspect.com etc.. mail from: root@YourCurrentDomain.com You should get "Sender OK" rcpt to: somebody@TheirDomain.com You should get "Relaying Denied" quit Open Relay Testing Techniques SpamLinks.net Orbs.org envelop testing ki.nu orbs envelop tests Chebuoto.ns.ca envelop testing Aupads.org ORVE - Open Relay Verifying Engine - 20 open relay vulnerability tests ReedMedia.net Example open relay tests ethz.ch open relay tests Whitehats.com mailrelay tests Open Relay test Scripts ( local copy ) Unicom.com Rlytest SourceForge.net relaytest dsbl.org Fabel.dk relay test Osirusoft.com rbcheck -- no NOT use Sendmail.org open relay test scripts arpa.org relaycheck.pl david.weekly.org relaycheck.pl packetStormSecurity.nl relayck.pl cymru.com mtaprobe.exp LaSahmpoo.net php Monkeys.com mrt - mail relay testor SpamLinks.net SpamHelp.org optionally reports open relay to DSBL.org SourceForge.net smtprc = SMTP Open Relay Checker Online Web-based testing SpamLinks.net SpamLinks.net open relay testing its.ausics.net PaladinCorp.com SpamLart email Open-Relay Tester rbl.jp AntiSpam-ufrj.pads.ufrj.br slow but good Aupads.org same gui as AntiSpam-ufrj.pads.ufrj.br Email-Test.com open-relay and pop3 tests Traceroute.utanet.at ( uses abuse.net ) LucidLogic.com mob.net seems silly Scorpion77.cjb.net SpamHelp.org NJAbl.org Tools-On.net Testing via email or telnet submission telnet relay-test.Mail-Abuse.org telnet rt.njabl.org 2500 IU.edu telnet xxx 25 - relay testing w/ telnet Abuse.net OpenRelay Testing Fabel.uk Mail-Abuse.org Anti-Relay: Stop Third-Party Mail Relay ORBL.org/#Submit IPs Open Relay Testing ORDB.org Open Relay Testing relays.oriruSoft.com do NOT use TrusonTechnologies.com Open-Relay Testor JA.net STAN - Spam-relay Tester And Notification system iinet.net.au Sendmail.org Open Relay tests w/ check_* Sendmail.org norelay flounder.net qmail SecureWall.co.uk Truson.biz nanet.co.jp check.jippg.org Open Proxy HatCheck.org Online Proxy Test Unicom.com pxytest Fixing Open Relays Update your MTA to the latest version Fix your DNS and MX records Ordb.org sendmail.org relaying Mail-Abuse.org Open Relay Fixes EsoSoft.com Blocking "Relaying" DigitalDaze.com Solutions to UCE uoregon.edu selective relay w/ sendmail Washington.edu relay.rejection.txt Misc CyberNothing.org Open Relay Complaint form AOL.com OpenRelay Abuser (?) - aol folks send out thru this list ?? InfinityMailer.com lists of open relays -- they should be shutdown 2mbit.com list of open relays - for RBLs Other Anti-Relay Resources SpamLinks.net

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