Someone who just tried to send me an email on my indie.host address got this error message back:
" This is the mail system at host mail.indie.host.
I’m sorry to have to inform you that your message could not
be delivered to one or more recipients. It’s attached below.
For further assistance, please send mail to postmaster.
If you do so, please include this problem report. You can
delete your own text from the attached returned message.
The mail system
<firstname.lastname@example.org>: unable to look up host spamassassin: Name or service
It was sent from a gmail address I believe.
Hope this can fixed soon…