DomainKeys Identified Mail is a scheme for signing and verifying email messages to confirm that that the source hasn't been forged, and is typically implemented by MTAs. The source MTA adds a header to the message body containing a signature, and the destination MTA verifies this signature against a ...
1
vote
2answers
163 views
How to force postfix to use ip that is configured for domain?
I want to confirm to SPF and DKIM, this requires me to send email using the IP written in the DNS record of the domain
I have two domains example1.com and example2.com with two IPs 100.0.0.1 and ...
1
vote
2answers
310 views
How do I use an include statement in a TXT record?
We have a client that is using an email service that requires a TXT domain key reocrd that is over 127 characters long. I'm pretty sure BIND allows this, however we run djbdns with tinydns and it ...
0
votes
2answers
221 views
exim dkimproxy configuration - explanation?
I'm trying to setup DKIM on exim in a cPanel VPS.
I'm going with the DKIM Proxy option since cPanel is seriously dragging its feet with the it's-definitely-coming 11.32 release.
These guides here, ...
0
votes
2answers
174 views
Yahoo is sending our server's transactional email to the Spam folder, even though we have set up SPF and DKIM
Yahoo Mail is sending our server's transactional emails to the Spam folder, even though we have taken quite a few anti-spam steps. By contrast, Gmail allows the messages through to the inbox just ...
2
votes
1answer
51 views
What is the benefit of using DKIM to sign Content Type?
DKIM has the ability to sign headers on a per-header basis. I looked at Google's headers, and they DKIM sign ContentType.
What is the security benefit of signing ContentType?
1
vote
1answer
175 views
DKIM failure when using Exim4 as an “edge transport” for Exchange 2010
I have a server running Exim 4.72 that is set up similar to the Exchange "Edge Transport" role: it forwards mail from the internet to Exchange and forwards mail from exchange to the internet.
I ...
1
vote
1answer
311 views
Unable to install DKIM and SPF on your cPanel/WHM domain. No errors but DKIM test fails
The strangest thing.. And I'm pretty sure that the solution is fairly simple..
I'm trying to install DKIM and SPF for one of my domain hosted on a dedicated server with cPanel WHM..
I'm following ...
0
votes
1answer
38 views
What is wrong in my DKIM setup? I'm getting all fails
I own a domain name
I have implemented SPF and DKIM to avoid my mails being junked. I have also upgraded to DMARC in monitor mode.
Since I received a few failure reports recently I wanted to ...
0
votes
1answer
33 views
named.conf to include zone file and opendkim conf
I would like to separate out opendkim default.txt from zone file and to be include in named.conf instead.
I'm a little bit confused on which approach I should use and which is the correct one.
...
0
votes
1answer
106 views
DKIM in Plesk with DNS managed remotely
Our primary domains DNS is managed over at Amazon Route 53, and so in Plesk (11.x) I've turned DNS off. The problem is that I want to begin using DMARC which requires both SPF and DKIM txt records to ...
0
votes
1answer
41 views
speed DKIM signing in mail server
I'm running email sending campaigns with milions of emails, and I need to sign each and one of them with DKIM. Unfortunately that's the bottleneck of the process.
I wonder if I can calculate a DKIM ...
0
votes
1answer
212 views
Exim: How to turn off DKIM for forwarded mail?
I have DKIM configured in Exim for outgoing mail, as per the documentation. Exim signs all outgoing mail. But some of those outgoing messages are forwards, thanks to a user's .forward file. This is ...
0
votes
1answer
97 views
DKIM signing having same public key
I have 20 servers hosted on orderbox DNS hosting,I have set up opendkim on all servers with signing by domain say "example.com" i.e d=example.com in DKIM header of all the server outbound mails.
The ...
0
votes
1answer
54 views
Rewrite header when no dkim header for specific domains
I have been receiving a lot of mails that are "From" my domain. These mails have usually a different return path (spf passes), but have for example my email in the to and the from header. ...
0
votes
1answer
405 views
DKIM on postfix relay server
I have a postfix/amavis relay server, with the domain name mail.example.com. It will be a relay for dozens of VPSs, which will have domains like hostname.example.net.
So i have actually two ...
0
votes
1answer
447 views
Debian Unstable + Postfix 2.6.5 + dkim-filter 2.8.2 issue
I have Postfix installed on Debian Unstable, as the title states, the system is completely up-to-date, I have tried to get DKIM signatures working on outgoing mail using dkim-filter 2.8.2.
I couldn't ...
-1
votes
1answer
1k views
dkim signature not present or bad format
I'm going mad with dkim-filter + postfix. My message are signed but Gmail notify me errors like "dkim=neutral(no signature)" or "dkim=neutral(bad format)"
I don't know what is wrong. I've generated ...
1
vote
0answers
40 views
DKIM on postfix server but not Exchange server?
We are looking into setting up DKIM to improve email deliverability and conform better to best practices for email. We currently have two servers that can send email for a domain - one is CentOS ...
1
vote
0answers
136 views
Sendmail rewriting headers after OpenDKIM signature
I have run into a problem described in section Sendmail REWRITING FEATURES on http://www.opendkim.org/README:
Due to the way the milter protocol is incorporated into the MTA, opendkim sees the ...
1
vote
0answers
168 views
Not Connecting from my zimbra webmail
I have configured zimbra webmail on centos 5.5 64bit server for e-mail authentication.
I have installed DKIM and dk-filter on it after installation to check authentication. I tried to open zimbra by ...
0
votes
0answers
16 views
Configure postfix to DKIM-sign emails generated from the system
My web hosting server features a Postfix setup up and running. That postfix is also open with STARTTLS on port 587 for authorized users (only me, myself and I right now) to send emails to any domain ...
0
votes
0answers
53 views
EXIM4 sent mail sometimes rejected, always put in spam. DKIM and SPF pass + reverse DNS
Recently I've been seeing some instances of Your access to this mail system has been rejected due to the sending MTA's poor reputation. in my maillog and have noticed that my emails have been getting ...
0
votes
0answers
94 views
postfix + opendkim not signing correctly. how to debug this?
EDIT: I did get a little further but all posts on my search say permissions are wrong or regenerate key but I fixed that to be 644 as well as owned by DKIM AND I keep regenerating the key but it is ...
0
votes
0answers
42 views
OpenDKIM can't determine message sender from MediaWiki pear mail
Iam using http://www.mediawiki.org/wiki/Manual:$wgSMTP to send Emails from my Wiki.
Apr 7 14:29:57 x postfix/smtpd[10763]: connect from <mailserver>[127.0.0.1]
Apr 7 14:29:57 x ...
0
votes
0answers
31 views
openDKIM signing sub-domain
I followed below article to setup opendkim + centos + plesk.
http://stevejenkins.com/blog/2010/09/how-to-get-dkim-domainkeys-identified-mail-working-on-centos-5-5-and-postfix-using-opendkim/
I have ...
0
votes
0answers
48 views
Exim 4.71 does not add DKIM signature to outgoing emails
I am trying to add DKIM to my domain, I have created a key, added the following to /etc/exim4/conf.d/transport/30_exim4_config_remote_smtp:
dkim_domain = mydomain.com
dkim_selector = mail1
...
0
votes
0answers
67 views
postfix/Exim - Mail “Scrubbing” component/filter?
I have currently a SMTP server (MTA) which handles outgoing mails from my domain. The server is DKIM & DomainKeys signing every authorized outgoing mail.
Have tried with both postfix and Exim4, ...
0
votes
0answers
68 views
SPF and DKIM breaking BlackBerry BIS
I set up DKIM and SPF on our domain that uses Google Apps to host email. A few hours later, the BlackBerries that were connected to it were not letting us send out emails quoting "General Failure". ...
0
votes
0answers
64 views
One dkimproxy server for multiple smtp servers
I have an postfix (outbound only) smtp server for only newsletter sending from an application, which already uses DKIM signing with required SPF records. Now i want to move this physical server to 5 ...
0
votes
0answers
324 views
Setting up OpenDKIM with postfix
I intalled opendkim with sendmanil (on Ubuntu) without any problem, and followed the same procedure for installing on another server (Debian with postfix), but it does not work. Strangely, there is no ...
0
votes
0answers
142 views
Automaticly Resolve TXT records in Directadmin (VPS)
I am trying to set-up domain-keys (DKIM) for my email system. Now does DirectAdmin have a nice thing with Exim:
/usr/local/directadmin/scripts/dkim_create.sh domain.com source
This will create a ...
