This probably one for ravenstar68
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.