DKIM for email through Google Apps domain with external outbound relay

Posted by David Gardiner on Server Fault See other posts from Server Fault or by David Gardiner
Published on 2011-02-07T23:13:18Z Indexed on 2011/02/07 23:27 UTC
Read the original article Hit count: 320

Filed under:

smtp

|

google-apps

|

dkim

I'd like to enable the new Domain Keys DKIM email authentication feature for a domain hosted in Google Apps.

Some of my users use an external SMTP gateway (such that when they send email, it doesn't go through smtp.gmail.com).

I have an SPF record configured for the domain, and this allows the external SMTP gateways as valid SMTP hosts. (I realise SPF is different to DKIM)

Will enabling DKIM adversely affect the external gateway email? eg. Are the externally sent emails at risk of being marked as spam because they would not have the DKIM signature, or will DKIM only positively benefit emails sent through Google's SMTP server?

© Server Fault or respective owner

Related posts about smtp

JavaMail not sending Subject or From under jetty:run-war

as seen on Stack Overflow - Search for 'Stack Overflow'
Has anyone seen JavaMail not sending proper MimeMessages to an SMTP server, depending on how the JVM in started? At the end of the day, I can't send JavaMail SMTP messages with Subject: or From: fields, and it appears other headers are missing, only when running the app as a war. The web project… >>> More
Gmail smtp, Blackberry, BB, socketConnection, send email via gmail smtp programmatically

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello! Somebody can help me how can i use the gmail smtp server programmatically via socketConnection. My question is how i can write write a TSL/SSL authentication because i can`t communicate with the server?? Somebody did it from java on blackberry ? Thank You Alex >>> More
How to resovle javax.mail.AuthenticationFailedException issue?

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I am doing a sendMail Servlet with JavaMail. I have javax.mail.AuthenticationFailedException on my output. Can anyone please help me out? Thanks. sendMailServlet code: try { String host = "smtp.gmail.com"; String from = "[email protected]"; String pass = "pass"; Properties… >>> More
Debugging Messaging Exception

as seen on Stack Overflow - Search for 'Stack Overflow'
We have a batch program that incorporates JavaMail 1.2 that sends emails. In our development environment, we haven't got the chance to encounter the above mentioned exception. But in the client's environment, they had experienced this a lot of times with the following error trace: javax.mail.MessagingException:… >>> More
Postfix Submission port issue

as seen on Server Fault - Search for 'Server Fault'
I have setup postfix+mailman on my debian server and i have an issue with postfix submission port. My ISP blocks SMTP on port 25 to prevent *spams and i must to use submission port (587). I have uncomment the following line from master.cf (/etc/postfix/) but nothing happens. submission inet… >>> More

Related posts about google-apps

Reach New Customers: Integrate with Google Apps in the Google Apps Marketplace

as seen on Google Code - Search for 'Google Code'
At tonight's Campfire One , we launched the Google Apps Marketplace , to make it easier for you to create applications that integrate deeply with Google Apps, and... >>> More
How to integrate with Google Apps and get listed on Google Apps Marketplace

as seen on Google Code - Search for 'Google Code'
On Tuesday we launched the Google Apps Marketplace at Campfire One and were joined by over 50 developers who built some great applications which are now available to... >>> More
Integrating Google Apps with Salesforce using Google Apps Script

as seen on Google Code - Search for 'Google Code'
Integrating Google Apps with Salesforce using Google Apps Script A very special Google Developers Live episode, in which Arun Nagarajan talks about using Google Apps Script with Salesforce to show how easily developers can integrate Salesforce with Google Sheets, Gmail, Google Docs and other Google… >>> More
Add Free Google Apps to Your Website or Blog

as seen on How to geek - Search for 'How to geek'
Would you like to have an email address from your own domain, but prefer Gmail’s interface and integration with Google Docs? Here’s how you can add the free Google Apps Standard to your site and get the best of both worlds. Note: To signup for Google Apps and get it setup on your domain, you… >>> More
DNS: forward part of a managed domain to one host, but sub domain services to another (Google Apps)

as seen on Pro Webmasters - Search for 'Pro Webmasters'
I was going to post this as a comment against DNS: Forward domain to another host, but I don't seem able to do that. I'm in a similar situation. I have a DNS registered/managed by enom, except with the slight twist that the domain was originally registered with enom through a Google Apps account… >>> More