Comments on How To Implement Domainkeys In Postfix Using dk-milter

How To Implement Domainkeys In Postfix Using dk-milter Domainkeys is "DomainKeys is a method of e-mail authentication. Unlike some other methods, it offers almost end-to-end integrity from a signing to a verifying Mail Transfer Agent (MTA). In most cases the signing MTA acts on behalf of the sender, and the verifying MTA on behalf of the receiver. DomainKeys is specified in Historic RFC 4870, which is obsoleted by Standards Track RFC 4871, DomainKeys Identified Mail (DKIM) Signatures." according to the wikipedia. So why a how to on it when there is DKIM ? Well domainkeys is still actively being used and is more widely deployed than DKIM, the developer Yahoo still uses it to sign and verify mail although they are contributers to the DKIM standard.

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By: Codechump
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Hi, 
 
I followed this how to exactly... several times! I'm running CentOS 5.2
 
I went to the site mentioned in the rpm download link and got an RPM for v1.0.2-0 but I still can't get my out going mails signed. I'm using postfix v2.3.3 
 
Any suggestions?... my emails when sent to Yahoo, the headers show domainkeys=neutral(no sig) 
 
thanks so much...

By: John Bailo
Reply  

Thanks, I think that means going the route of building my own from source!

 

 

By: victor
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Hi all,

I already followed the guidelines, everything seemed fine. However, when I sent an email to a yahoo email address, we could not pass the domain authorization check and find the signature as well.

In addition, we also found that there was no any domain signature header to be appended in an email when we sent it to yahoo.

Do any linux expert know the reason? this problem really annoys us and we are very frustrated now. Please help !!!

By:
Reply  

The rpm is built for Centos/RHEL YMMV with SUSE

By: Anonymous
Reply  

I tried running the rpm installation command on my openSuse 11.0 server and was told that libcrypto.so.6 and libssl.so.6 are needed (see below).

I'm running version .9 of these libraries to support the dkim milter.

Is a version of the dk-milter rpm that supports the latest openSSL version available?

kanaadmin@susemail:~> rpm -Uvh http://www.topdog-software.com/oss/dk-milter/dk-milter-0.6.0-1.i386.rpm
Retrieving http://www.topdog-software.com/oss/dk-milter/dk-milter-0.6.0-1.i386.rpm
error: Failed dependencies:
    libcrypto.so.6 is needed by dk-milter-0.6.0-1.i386
    libssl.so.6 is needed by dk-milter-0.6.0-1.i386
kanaadmin@susemail:~>

By:
Reply  

Have you tested your DNS to see that it is correct ?

By: Parsa
Reply  

Hello,

I installed & configured all the things you said above, but when I send an email from that mail server to my yahoo.com email, I see in the header: DomainKeys-status: fail(bad sig).

 What happened, and how can I fix this problem?

 

Best Regards,
Parsa

By: jack ann
Reply  

when i try to install the rpm with this line command 

rpm -Uvh http://www.topdog-software.com/oss/dk-milter/dk-milter-0.6.0-1.i386.rpm

 i obtained :

Retrieving http://www.topdog-software.com/oss/dk-milter/dk-milter-0.6.0-1.i386.rpm
error: skipping http://www.topdog-software.com/oss/dk-milter/dk-milter-0.6.0-1.i386.rpm - transfer failed - Unknown or unexpected error
warning: u 0x9b7cc50 ctrl 0xa2d31c0 nrefs != 0 (www.topdog-software.com http)

please help me ..