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 ...

learn more… | top users | synonyms

0
votes
2answers
555 views

Unable to send mail to hotmail from rackspace cloud

I'm having issue sending mail from postfix on a rackspace cloud instance for my domain. Hotmail says "550 SC-001 (SNT0-MC4-F35) Unfortunately, messages from 198.101.x.x weren't sent. Please contact ...
1
vote
1answer
103 views

DKIM sign any outgoing mail as the same domain. is possibly?

I have a website, and the users recommend via email to another persons, so the mail come from my site, but I need to appear the user as sender, but "via" mydomain. The logically and what lists ...
0
votes
0answers
519 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 ...
42
votes
6answers
7k views

Fighting Spam - What can I do as an: Email Administrator, Domain Owner, or User?

This is a Canonical Question about Fighting Spam. Also related: How to stop people from using my domain to send spam? What are SPF records, and how do I configure them? There are ...
0
votes
1answer
128 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
2answers
407 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, ...
0
votes
1answer
806 views

Exim DKIM Error: DKIM: signing failed (RC -101) no matter what private key I try

I have this problem with Exim. DKIM fails on signing outgoing mails. This is the /var/log/exim4/mainlog output (Debian Squeeze): 2012-08-02 17:11:33 1Sx1k5-0004Tk-9D <= me@my_domain.com U=me ...
1
vote
2answers
657 views

postfix not reporting FROM address to opendkim

I am trying to setup an DKIM email signing for a postfix SMTP server. This server is to be used by different services on the local network. I have generated DKIM key pair, added it to my domain and ...
1
vote
3answers
1k views

DKIM showing bad format

Setting up DKIM on my Postfix/CentOS 5.6 server. It sends and signs the emails, but Google still showing it neutral. The errors I'm getting are: dkim=neutral (bad format) header.i=@r02.lbsmtp.org ...
-1
votes
1answer
87 views

Outbound mail signing…?

My scenerio is " php application---->Load Balancer----->smtp server...>relaying My load balancer receiving mails from php application from different domains now for DKIM we need to sign by ...
3
votes
1answer
65 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?
2
votes
1answer
65 views

Understanding the many “FROM” addresses that apply to SenderID, DKIM, and SPF

Can someone tell me when and why a client, MTA relay, Unix .Forward, anonymous relay, or listserver will create, or alter these headers: Resent-Sender: Resent-From: Sender: From: If you can please ...
3
votes
1answer
358 views

What problems can an ADSP record in DNS cause for mailflow?

ADSP is an entry in DNS that works allows a domain owner to assert that all email must be signed with DKIM. (similar to the -all and ~all in SPF/SenderID). Messages that fail ADSP policy may be ...
0
votes
2answers
213 views

DKIM signed mails go to spam folder and do not show key icon

I have installed DKIM for my sendmail and I have also configured it. But I still see that my emails are being considered as spam by gmail. Also, I do not see the "key" in the emails (even if I unspam ...
1
vote
2answers
466 views

What are DKIM (DomainKeys Identified Mail) and The SPF (Sender Policy Framework)?

I recently saw that cpanel has new entry for DKIM (DomainKeys Identified Mail) and The SPF (Sender Policy Framework). They seems to be talk about a mail/spam prevention ...etc I would like to ...
0
votes
1answer
67 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. ...
5
votes
3answers
2k views

PTR OK, SPF, DKIM passed but email messages are marked as Spam by Google?

# host 1.2.3.4 4.3.2.1.in-addr.arpa domain name pointer mail.domain.vn. # dig +short txt domain.vn "v=spf1 a mx ptr -all" # dig +short txt mail.domain.vn "v=spf1 a -all" Here's an email header ...
0
votes
1answer
298 views

Effective configuration of dkimproxy in multiple-domain scenario

I have a postfix/dkimproxy setup that doesn't work the way I like. I have exampledomain.org with SPF allowing mail only from server.exampledomain.org (rDNS mapped correctly) which is also aliased by ...
1
vote
2answers
326 views

dkimproxy unable to read private key

I just found this error in my server logs May 17 14:55:07 marcus dkimproxy.out[1005]: signing error: Error: cannot read /etc/ssl/private/dkim_server/dkim_server.key: Permission denied dkimproxy ...
0
votes
1answer
228 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 ...
1
vote
1answer
230 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
1k views

How can I change exim's DKIM and SPF for emails sent?

I've now spent 2 hours trying to figure out this issue and I am about to give up and go to bed. I've been having issues with Gmail rejecting emails from my VPS server because of false spam alerts ...
0
votes
2answers
374 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 ...
0
votes
1answer
954 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 VPS's, which will have domains like hostname.example.net. So i have actually two ...
2
votes
1answer
605 views

How to fix DKIM for mail on VPS hosting?

I have a hosted VPS that is fully managed by the hosting company. For weeks they cannot figure out how to get DKIM working for my emails, even though in cPanel's Email Authentication section says DKIM ...
1
vote
1answer
3k views

How to setup X-SID , X-AUTH & X-DKIM at windows server 2008 r2 with IIS 7.5

I am very sad that my legit emails drops to spam box while i receive many spam emails into my inbox. I very rarely send announcement emails to my all registered members (over 400k right now) but most ...
1
vote
1answer
303 views

using own mail server with external domain and dns. Now have internal dns. dkim test not working

I am not very knowledgeable in this area, but have been able to make great head way. Now i am stuck I setup my own mail server, e.g mailbox.example.com. I had the domain dns point to my mail server ...
1
vote
0answers
239 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
1answer
469 views

adding DKIM signature to email where dkim=pass

I am building a e-mailing app and I am using Amazon SES API to send emails and long with that I am adding the DKIM signature to the email which are being sent. Presently the app is in the testing ...
-4
votes
2answers
280 views

SPF and DKIM configuration with postfix [closed]

I am using Centos-5 and have configured postfix mail server. How to i configure SPF and DKIM in Postfix.
1
vote
2answers
394 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
3answers
180 views

Sending email from a 3rd-party-hosted server

We contracted with a 3rd party vendor to build and host a web application for us. The web app will need to send email notifications out to users when they request it. The application is not hosted ...
0
votes
2answers
274 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
1answer
468 views

How do I setup a SMTP ID to my server?

I am trying to increase email deliverability, from what I read, most important things I need to have set are SPF records, DKIM and sender ID, I set SPF and DKIM, but... "sender ID" is same as "SMTP ...
-1
votes
1answer
274 views

Confused with Domainkeys. Help?

I generated a domain key for my domain at http://www.socketlabs.com/services/dkwiz and got the following two things generated. Generator Key1: Setting up Hurricane Server Edit the configuration for ...
1
vote
1answer
1k views

How to add DKIM feature to the IIS 7.5 - Windows Server 2008 - DomainKeys Identified Mail

How to add DKIM feature to the IIS 7.5 - Windows Server 2008 DomainKeys Identified Mail
0
votes
2answers
885 views

DKIM-filter is signing mails with invalid DKIM signatures (v=1 instead of v=DKIM1 etc)

I followed the dkim-filter install instructions from Ubuntu's community help page My dkim-filter is signing DKIM signatures with this v=1; a=rsa-sha256; c=simple/simple; d=my.domain.com;s=mail; ...
2
votes
1answer
3k views

How do I use OpenDKIM with multiple domain names on a single server?

How do I use OpenDKIM with multiple domain names on a single server? I own 3 domain names, and I have a single server that's running postfix for sending email. How do I use OpenDKIM? Can I use the ...
0
votes
2answers
448 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 ...
0
votes
3answers
2k views

OpenDKIM Filter: Unable to create listening socket

hi i keep getting this error in maillog.any ideas Jul 22 10:16:52 veepiz opendkim[5145]: OpenDKIM Filter: Unable to bind to port inet:20209@localhost: Address already in use Jul 22 10:16:52 veepiz ...
0
votes
1answer
2k views

problems with opendkim and postfix centos

Hi im having problems with opendkim signing mail. check my log. i fixed the permission issue by chowning that file. but still emails are not being signed. any clues? running on centos5 with ...
1
vote
1answer
208 views

cron jobs for php executing differently

I have setup dkim on my server using opendkim(centos). when php executes mail command(on website eg forgot.php). it sends an email signed with DKIM. but i also setup a cron job to run mailcron.php ...
0
votes
2answers
236 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 ...
0
votes
2answers
414 views

Getting started with DKIM / DomainKeys

I'm using WinServer to generate and send emails via my Goggle Apps-hosted domain (my SMTP server is smtp.gmail.com) . My registrar (Network Solutions) supports Text records - so I should be able to ...
2
votes
1answer
629 views

Mail classified as spam, but passes SPF and DKIM

I have configured Postfix to be responsible for subdomain.example.com (google apps is responsible for example.com so I didn't want to mix the two). As I mentioned in question title, SPF and DKIM ...
1
vote
2answers
166 views

Trying to configure email server for sending only

I need to install Postfix or Exim to be able to send emails from my web server's php code. I have a few questions hopefully I can find answers to: Could mail be rejected or sent to spam on ...
1
vote
2answers
344 views

Simple Outgoing Mailserver With Dkim filters

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.
-2
votes
1answer
133 views

Need a good guide for setting up postfix

I will be sending mail from my machine (just sending, not receiving any) I'm looking for a good guide that will help me configure it with all the things that are required so that receiveing servers ...
1
vote
1answer
276 views

messed up confused dns records!

I'm totally new to this, please help. While trying to redirect the mail from my server to gmail using MX records, I think I've messed up, and I'm way confused about that. First: I can set DNS records ...
1
vote
2answers
156 views

would this header cause the email to be flagged as suspect?

Authentication-Results: [snip].mail.[snip].[snip].com from=someDomain.com; domainkeys=neutral (no sig); from=someDomain.com; dkim=neutral (no sig) Received: from 127.0.0.1 (EHLO ...