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 ...

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681 views

Dkim DNS Setup: dig +trace finds the key, dig notrace doesn't

i'm setting up DKIM for my domain to sign outgoing mails. I've got some issues on DNS configuration, because DNS configuration is mixed between external DNS (hosting) and a cloud server, which sends ...
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1answer
786 views

How to write DKIM TXT DNS Record in GoDaddy?

I am trying to understand how I should write my DKIM key in GoDaddy. What I wrote in the picture is my guess but I will then add my DKIM Key to sendmail and if I'm note sure this one is right I'll ...
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1answer
1k 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. ...
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1answer
227 views

How to Masquerade Sendmail Domain and Make DKIM Use the Correct Domain

I have a single domain with a dozen subdomains for different sites. Each has a separate virtual host in apache. I configured sendmail to masquerad as the top-level domain so that emails are always ...
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1answer
83 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 ...
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1answer
173 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 ...
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2answers
658 views

How do I set up DomainKeys/DKIM and Sender ID

I have searched far and wide for a guide on how to setup DomainKeys/DKIM and Sender ID. I understand there are text records you add to your DNS, but I cannot find out how to create theses, ...
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1answer
105 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. ...
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2answers
672 views

How to setup same DKIM setings for multiple servers

I have three servers configured to relay mail. I am using dkim-milter with postfix on CentOS 5.5. I created domain keys on the command line for each server. My issue is that the domain key is ...
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1answer
124 views

Spf dkim edit dns zone mailing issue

I am running an hosting company and i was previously affliate of hostgator. when i sent mails from my domain to my customers it would come as info@example.com via hostgator.com and mailed by ...
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2answers
354 views

Simple Outgoing Mailserver With Dkim filters [closed]

What is the most simple MTA to use and configure on Debian 6 squeeze, with dkim filters? I would like to only send mail from it, not receive. Google apps handles my inbound email.
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1answer
375 views

Can I use DKIM verification without DKIM signing?

I'm using iRedMail and im wondering if I can use only DKIM verification and dont signing emails with DKIM??
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1answer
855 views

DKIMPROXY signing wrong domain

Just.... wont sign a thing... The dkimproxy_out.conf: # specify what address/port DKIMproxy should listen on listen 127.0.0.1:10028 # specify what address/port DKIMproxy forwards mail to relay ...
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1answer
839 views

Opendkim verification when using Dspam

I have Opendkim working well for signing messages but verification fail, I guess that's because emails are injected from Dspam on 127.0.0.1:25000 so Opendkim try to sign the mail instead of verifying ...
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1answer
995 views

DKIM passes everywhere apart from Yahoo!

I'm using dkim-milter, Postfix on Ubuntu (I think I used these instructions for setting up). Anyway, using the reflectors such as Port25, BlackOps and Altn.com I get passes for DKIM: X-DKIM: OpenDKIM ...
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1answer
3k views

I can't send email from my server to gmail addresses

I'm using postfix, and have setup spf, dkim, and domainkeys. I can get my email to go to Yahoo, but not gmail. Here's the headers from an email send to Yahoo. Yahoo reports the email as domain key ...
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1answer
3k views

Emails are going to spam

Hey guys, I am currently running exchange 2010, I have implemented SPF record, and tried to implement dkim/domain keys using domain sink, but it doesn't seem to work. The problem I am having is that ...
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1answer
146 views

Changing DNS Name checking

using windows 2003 Server with DNS service brought me to the option of "name checking". Our current setting is "RFC only". This settings prohibits names with underscore at the beginning, which is ...
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0answers
15 views

Postfix mail always in spam [duplicate]

I've installed and configured postfix trying to find the best way on the web. This is postfix main.cf: smtpd_tls_security_level = may smtpd_tls_received_header = yes smtpd_tls_session_cache_timeout ...
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0answers
42 views

dkim=temperror at hotmail and dkim=pass at gmail

When i send emails to hotmail, i get dkim=temperror. However, my dkim records are good as checked by gmail. At hotmail, i get also spf=pass, X-AUTH-Result: PASS, X-SID-Result: PASS 7 days ago, i ...
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0answers
13 views

Debugging dkim=fail using sendmail+dkim-milter

I'm setting up a CentOS server with the sendmail MTA to send DKIM-signed mail (sending domain is @brighter.do). I have succeeded in routing mails through the dkim milter; however, they arrive at my ...
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1answer
48 views

Does DMARC send alerts even upon successful delivery?

I keep getting DMARC reports that show that my IP passed all SPF and DKIM checks. Is this just an email to say that everything's fine or is it an indication of a problem? If the latter, there's ...
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0answers
66 views

How to send DKIM signed email with PHP Mail

I'm using Cacti and the PHP mail option. I want to sign my emails with DKIM I have setup rsa key, signatures, and keytable with opendkim. Opendkim conf which I added to is below taken from a tutorial. ...
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1answer
27 views

DKIM signature and hmailserver - Your DKIM signature is not valid

I'm trying to get DKIM working on a domain using hmailserver as the mailserver, but I keep on getting Your DKIM signature is not valid This is from www.mail-tester.com The DKIM signature of your ...
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0answers
11 views

Yahoo marked my mail as spam [duplicate]

Yahoo is marking our mail as spam. Mail header says that Domain Key, PTR, SPF all ok. From Abrabos Mon Jan 18 23:41:38 2016 X-Apparently-To: carry.vaillant@yahoo.com; Mon, 18 Jan 2016 23:45:10 +0000 ...
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90 views

DKIM fail signature doesnt verify

I had setup postfix and dkim and keep on getting dkim=fail on port25 and gmail checks. DKIM check details: Result: fail (signature doesn't verify) ID(s) verified: Canonicalized Headers: ...
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0answers
89 views

DKIM, SPF, DMARC, SPF OK mails are flagged as SPAM

I have a dedicated server running CentOS7 with Postfix, the problem is that all the sent mails are flagged as SPAM by hotmail and gmail despite DKIM, SPF, DomainKeys, DMARC records and keys wich are ...
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1answer
29 views

Two DKIM signatures in outgoing messages

I have DKIM and SPF correctly configured on my server with postfix (myserver.com). However, when I send emails from Gmail configured to authenticate and send email as myname@myserver.com ...
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0answers
527 views

DKIM-verification fails because of “insecure key”

I have my Debian (7.9 "wheezy") E-Mail-server (Postfix 2.9.6-2) setup to sign and verify DKIM signatures in e-mail messages using OpenDKIM (version 2.6.8-4). When I send myself an e-mail from my ...
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1answer
46 views

Amazon SES DKIM signing with Route 53 issue

I had DKIM signing setup and working fine for my example.com for years. But recently i moved my DNS to amazon Route 53 and added all records there, including the CNames that was previously with the ...
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1answer
345 views

Route53 DNS and DKIM/TXT

I've been trying to set an openDKIM public key as a TXT record within the Route53 hosted zone for my domain. The record is mail._domainkey .zewtie.io but, however I enter the public key in the ...
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742 views

Configure SPF for gmail account

I am really new to this @ v=spf1 include:_spf.google.com ~all 1 Hour I have added the above spf setting for admin@studentclutter.com as it is a google apps email account However, I am getting ...
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2answers
333 views

Exim4 doesn't add DKIM signatures

I cannot overcome a problem with exim - it's not adding DKIM headers to my outgoing mail. support:~# cat /etc/issue Debian GNU/Linux 7 \n \l support:~# dpkg -l|grep exim ii exim4 ...
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1answer
121 views

Prevent Email Going to Spam [duplicate]

I've set up my own server and I'm really struggling to stop any outgoing email go to spam. I've used allaboutspam and mail-tester.com to test it and they both come back with perfect results. No ...
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0answers
630 views

new dkim config -> opendkim-testkey: record not found

I am trying to set up dkim and I cannot get it to work or test properly, and I get the following error: opendkim-testkey -vvvv -d domain.com -s default opendkim-testkey: checking key ...
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1answer
76 views

Partial DKIM pitfalls?

We've recently implemented DKIM for automated emails sent out from our website (SMTP on static IP). However we cannot implement DKIM for our hosted exchange email accounts (managed hosting sends from ...
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1answer
93 views

DKIM wrong selector / domain

We're having an hard time setting the DKIM record for our sender domain. I'll get into more details: We have a valid key (check) for a sending subdomain (email.mydomain.com) with selector ESP1024 In ...
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0answers
37 views

Sign with one DKIM key for all subdomains [duplicate]

I've set up DKIM key for primary domain as per this tutorial: http://askubuntu.com/questions/134725/setup-dkim-domainkeys-for-ubuntu-postfix-and-mailman Can I use the same key to sign for subdomains ...
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1answer
60 views

Using DKIM in my server for multiple domains (websites)

As I couldn't find this exact tutorial in Stack, I share my findings with al of you. I always get things solved thanks to this comunity. Thanks! Original question: I've read the tutorial posted by ...
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2answers
323 views

Email flagged as spam or rejected by recipient mail server

I have configured SMTP service on a windows 2008 server. All the emails sent by the SMTP service are flagged as spam or they are rejected by the recipient of the email. In the header of the email I ...
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1answer
453 views

How sendgrid assigning its DKIM keys when we send email from application

I was exploring about DKIM. I read an email which was sent via sendgrid and with application from remote server. My question is , how can assign the DKIM key of own server if sender id do not exist in ...
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1answer
31 views

Domain Key Entries

More BIND DNS questions. OK, my changes the the zone files are no propagating out. Now I'm having a problem with the domain key entries I'm trying to create. I'm starting by trying to set the domain ...
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1answer
423 views

Can't get opendkim to work on Ubuntu

I just set up my first mail server on Ubuntu 12.04 LEMP server with Postfix and Dovecot using this guide, and it may have been the happiest day of my life to send an email to my Gmail account. The ...
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3answers
123 views

DKIM partial implementation

My organization has 2 mail servers. One is our MS Exchange server for corporate mail. The other is an SMTP server (not Exchange) our application uses to send automated email notifications to our ...
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1answer
464 views

dkim-testkey return keys do not match after key's creation

as in the title I am struggling with the creation of the dkim key. For key creation I use these commands openssl genrsa -out s1024.private 1024 openssl rsa -in s1024.private -out s1024.public -pubout ...
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2answers
1k views

DKIM multiple mail servers

We currently have a single mail server (RHEL/sendmail) for all mail "mail.example.com". We have added a second mail server "email.example.com". We intend to use this for bulk email, while ...
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2answers
317 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 ...
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2answers
1k views

How to install dkim for postfix in centos 5.4

I am trying to install DKIM for my postfix so that i have a signature. I am following this guide: http://allaboutlamp.com/2009/09/setup-dkim-for-postfix-in-fedora-using-dkim-milter/ But how do i ...
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1answer
753 views

DKIM and Request-Tracker Headers

I have a domain that sends two different types of emails: ones that are created via automated processes like notifications that go out to users, and ones that are generated from Request Tracker (the ...
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3answers
218 views

Improving email deliverability: Implementing DKIM and DMARC

I have a messaging system on my app where users can send messages directly to other users straight from my domain (not going through Mailchimp's Mandrill templates or Google Apps). I also have cron ...