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Quick Blacklist Check:  
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Spam Database Lookup Results for 54.242.193.41

rDNS/PTR record for 54.242.193.41 is "ec2-54-242-193-41.compute-1.amazonaws.com".

Some mail servers will not accept mail from IP addresses with no rDNS/PTR record or a generic PTR record.

The following are blacklist test results. Being listed with a DNSBL does not always indicate the IP address is a source of spam. Some DNSBL's criteria are based of the IP address' country or connection type. If you are listed with a DNSBL click on the link for removal criteria.

all.s5h.net b.barracudacentral.org bl.emailbasura.org
bl.spamcop.net blacklist.woody.ch bogons.cymru.com
cbl.abuseat.org combined.abuse.ch db.wpbl.info
dnsbl-1.uceprotect.net dnsbl-2.uceprotect.net dnsbl-3.uceprotect.net
dnsbl.anticaptcha.net dnsbl.dronebl.org dnsbl.inps.de
dnsbl.sorbs.net dnsbl.spfbl.net drone.abuse.ch
duinv.aupads.org dul.dnsbl.sorbs.net dyna.spamrats.com
dynip.rothen.com http.dnsbl.sorbs.net ips.backscatterer.org
ix.dnsbl.manitu.net korea.services.net misc.dnsbl.sorbs.net
noptr.spamrats.com orvedb.aupads.org pbl.spamhaus.org
proxy.bl.gweep.ca psbl.surriel.com relays.bl.gweep.ca
relays.nether.net sbl.spamhaus.org singular.ttk.pte.hu
smtp.dnsbl.sorbs.net socks.dnsbl.sorbs.net spam.abuse.ch
spam.dnsbl.anonmails.de spam.dnsbl.sorbs.net spam.spamrats.com
spambot.bls.digibase.ca spamrbl.imp.ch spamsources.fabel.dk
ubl.lashback.com ubl.unsubscore.com virus.rbl.jp
web.dnsbl.sorbs.net wormrbl.imp.ch xbl.spamhaus.org
z.mailspike.net zen.spamhaus.org zombie.dnsbl.sorbs.net


Legend:
= Not Listed
= Listed
= Timeout Error
= Offline


If you have information to contribute concerning a DNSBL not on this list please contact us.