Security Basics mailing list archives
DNSs, MXs and RBLs....
From: "Santiago Barahona" <sant-bar () dsv su se>
Date: Thu, 20 Mar 2008 19:26:19 +0100 (CET)
Hi all, I have a question.... Once upon a time, there were two companies that created one new entity (let's say 50-50)... one of them provides the IT infrastructure and the other "the name" (i guess): it is company A's mail servers, and company B's domain name... Since the new users will be in company A's infrastructure, their mailboxes will be hosted in company A's mail servers... but the domain name will be controlled and hosted by company B... to do this someone has suggested to company B to modify their DNS entries to point to company A's domain name.... So when a MTA tries to reach user () newco com, it will find in Company B's DNS that it points out to companyA.com, then it will go ask a DNS who is companyA.com and deliver the mail... (tell me if I'm wrong)... At first glance it looked OK but then it started to cause me trouble when I thought about the case when the users of this domain start sending mails because I think that company A's mail servers risk of being "black listed" by some RBLs... if this happens not only the users of the new entity will be percieved by spam but all users that use those servers... Any light??... is it possible to get blacklisted this way??... do you have any suggestions on how to avoid the risk?? or should make a risk analysis and present it to management in order to get it to be accepted or not?? Many thanks for your remarks and suggestions! cheers, santiago
Current thread:
- DNSs, MXs and RBLs.... Santiago Barahona (Mar 20)
- Re: DNSs, MXs and RBLs.... Ansgar -59cobalt- Wiechers (Mar 21)
- Re: DNSs, MXs and RBLs.... Ned Fleming (Mar 21)
- Re: DNSs, MXs and RBLs.... Santiago Barahona (Mar 24)
- Re: DNSs, MXs and RBLs.... Ansgar -59cobalt- Wiechers (Mar 24)
- Re: DNSs, MXs and RBLs.... Santiago Barahona (Mar 26)
- Message not available
- Re: DNSs, MXs and RBLs.... Ansgar -59cobalt- Wiechers (Mar 26)
- Re: DNSs, MXs and RBLs.... Santiago Barahona (Mar 24)