2 Resources for

rdns

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Reverse DNS: Hi folks, Lately, some users are getting this message error when sending emails to specific addresses. 5.5.0 smtp;550-Reverse DNS is missing or incorrect for the sending machine. I know it's related to rDNS but I don't know how to setup rDNS for our email server. Any help would be...; Tags: E-mail, tzutzasialbu@...; Discussion threads 2007-05-15
Reverse DNS: How do I check the RDNS entry for my mail servers? Suppose my mail server is test.exapmle.com(ip= 65.34.56.121) what should be my RDNS?Are you talking about MX? or simple reverse lookup?nslookup "your mail servers fqdn"your RDNS address should be 121.56.34.65.in-addr.arpaif you have a linux box standing around just do a...; Tags: e-mail, e-mail server, IP, PTR, RDNS, server, ssssss2@...; Q&A 2005-07-21

dToolz (exe): dToolz is an advanced Windows software program with a variety of features relating to domain verification and DNS resolving. It includes a Domain MX verifier, a RDNS checker and a Catch-all verifier. The Domain MX verifier will perform MX lookups on the domains in a list to determine which domains...; Tags: Domain, dToolz, E-mail, Online Communications; Software downloads 2006-07-08
Cannot send email to AOL: For months, we have had intermittent issues sending email to AOL addresses. I have worked with AOL engineers and verified that our DNS MX records are correct. We have RDNS and spf record and AOL has verified that they are correct. I have established feedback loops all...; Tags: E-mail, Network technology, NETWORKING, Cyberthreats, America Online Inc., IP; Q&A 2005-04-20
Computers join domain at different sites: OK. I think this is a good one.My host site has 3 domain controllers. When physically at the host site, while joining a pc to the domain, the pc will often join the domain at a remote site. The computer doesn't show in AD host site, only at the remote...; Tags: computer, domain controller, KCC, scottara2@..., windows; Q&A 2005-07-06

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TechRepublic's Peer To Peer Policy: Peer-to-peer networks--such as BearShare, Kazaa, LimeWire, Morpheus, and others--present numerous significant security threats to organizations. Permi ...; Buy Now