on 02-04-2022 18:54
This probably one for ravenstar68
Dear Tim
I hope you can help me with my issue.
I am running a home LAMP server for a website and have installed "nullmailer" (instead of Postfix which is far too complex for my simple requirement) as a simple MTA for sending emails via Virgin Media which is acting as the Relay SMTP server.
All is working well while testing including the SPF and DMARC records which have a "pass" in the authentication results according to the headers of the emails I've tested. The DKIM is showing "unknown" as no keys have been set up. The documentation for nullmailer is a bit sparse and would like to know how it can be configured after setting up the keys e.g. using OpenDKIM ?
I am also having an issue with the odd "Cron Daemon" email message being sent automatically while nullmailer is active. Have tried MAILTO="" in the crontab settings. I wondering if I'm missing a trick ?
Looking forward to hearing from you.
ATB
Van
on 05-04-2022 16:37
Solved it !
Reverted to Postfix as the MTA instead of nullmailer. Used a couple of online tutorials to configure a basic Postfix set up from scratch and it worked.
Had to find a good DKIM online tutorial and used Opendkim set up with a KeyTable and SigningTable and TrustedHosts.
Managed to create an email where SPF, DKIM, DMARC where all 3 authentication results were pass. Now I can moved on with confidence to include the functionality in my webserver.
Feel free to PM me for the details.
ATB
Van
on 06-04-2022 17:11
Good to read that you solved the issue.
Do consider documenting the solution here and mark that post as helpful so others experiencing a similar issue can benefit from it.
--
I'm a Very Insightful Person, I'm here to share knowledge, I don't work for Virgin Media. Learn more
Have I helped? Click Mark as Helpful Answer and solved, or use Kudos to say thanks