New box set up last week … noticed an issue in the mail queue with a mail not being sent which let to looking at logs … and finding several entries for incoming mail that is being rejected.
The entries are similar to:
Jan 31 23:44:45 dallas postfix/smtpd: NOQUEUE: reject: RCPT from unknown[22.214.171.124]: 450 4.1.8 <Public.Business@SOS.STATE.CO.US>: Sender address rejected: Domain not found; from=<Public.Business@SOS.STATE.CO.US> to…
(that is not the entire line in the log entry)
What it appears to me is that MiaB is not doing lookups properly. How do I troubleshoot this?