Change Envelope From to match From header in Postfix
I believe you want “sender_canonical_maps” (and “recipient_canonical_maps” if you want inbound mail to be translated backwards): http://www.postfix.org/postconf.5.html#sender_canonical_maps
g-suite
Benefits of using a subdomain for sending email?
My question is: Is there any added benefit of sending automated email from an email address with a subdomain? I don’t think there are many technical reasons why a subdomain is required or necessarily better for deliverability of emails. That being said, having/using subdomains can sometimes make things easier for large organizations because: As an … Read more
Creating MX record in Google cloud DNS
You need to prefix the FQDN with the priority: For what it’s worth, it actually says this in the help button right above the field: A number and DNS name of a mail exchange server, indicating priority of the server. Servers with lower numbers are tried first.
Does transferring a domain transfers DNS records?
Generally, no. It’s important to understand that the domain only references a nameserver; the DNS records aren’t actually stored with the domain registration at all. When you transfer a domain name, most gaining registrars will leave the nameserver associated with the domain unchanged, so your DNS records will keep working as long as your DNS … Read more
How to setup a SPF record to help fight SPAM
There is an article on Google Apps help about this. http://www.google.com/support/a/bin/answer.py?hl=en&answer=33786 All you need to do is add that TXT record and you’re set. I don’t know what you mean by “fight SPAM”, as all this does is authenticate that the e-mail you are sending is not spoofed, so all it will do is help … Read more
set Google Apps SPF record in Amazon AWS Route 53
I had to wrap my SPF record in quotation marks for it to work. “v=spf1 include:_spf.google.com ~all”
Is there any solution to make OpenVPN authentication with Google ID?
While looking for a solution for this I came across Gate. It automates OpenVPN profile creation behind OAuth and supports MFA. It’s also got an admin console for user management. Here is a blog post from the developers outlining its use-case and features. UPDATE 06/2019 – Pritunl is now my go-to solution for this. It … Read more
Google Apps, AD and SSO
There are a couple things you can do with Google Apps. You can setup a SAML server connected to your AD network and then setup Google to authentication your Google Apps access against the SAML server. We have used a php application called simpleSAMLphp because we already have servers setup to run PHP and we … Read more
Is there a way to align SPF for Google Apps alias domain?
Use the redirect modifier to “replace” the SPF record for the alias domain with that of the primary domain. Thus, the SPF record for aliasdomain.com ends up looking like this: v=spf1 redirect=primarydomain.com Note that no all mechanism is required, the final clause of the primarydomain.com record will apply.
Google SMTP Error: 454 4.7.0 Too many login attempts, please try again later
I discovered that the problem was that although we had SPF records set up for our domains, we did not have a DKIM record associated with our domain. In order to add a DKIM record in Google Apps, you need to do the following: Go to the Admin Console Click on “Google Apps” Click on … Read more