Hi Johnnie, Usual cause here is that exim is being listed as an mail exchanger in DNS for a domain that it is not the final destination for; in such cases, it is attempting to relay to another server, but that traffic is coming back to itself. Logs should tell you the domain it is coming in for, and where it was sent to, plus a "nslooup -q=mx" on the domain should give you the DNS records in question. If the domain is correct BUT there isn't a matching local account, it is possible an alias record could map that address to the local account required.
On Tue, 15 Jul 2025 at 20:39, Johnnie Adams via Exim-users < [email protected]> wrote: > Hi, folks, > > About five years ago, we sunsetted a server which ran Exim and > Dovecot. It turned out we needed to revive it recently, so I spun it back > up. > > To my surprise, the routing is no longer working, claiming instead > there's now a mail loop. > > What on earth could cause that to happen? I'm puzzled enough that I > don't know where to begin. > > Thanks, > > John A > > -- > John Adams > Senior Linux/Middleware Administrator | Information Technology Services > +1-501-916-3010 | [email protected] | http://ualr.edu/itservices > *UA Little Rock* > > Reminder: IT Services will never ask for your password over the phone or > in an email. Always be suspicious of requests for personal information that > come via email, even from known contacts. For more information or to > report suspicious email, visit IT Security > <http://ualr.edu/itservices/security/>. > > -- > ## subscription configuration (requires account): > ## > https://lists.exim.org/mailman3/postorius/lists/exim-users.lists.exim.org/ > ## unsubscribe (doesn't require an account): > ## [email protected] > ## Exim details at http://www.exim.org/ > ## Please use the Wiki with this list - http://wiki.exim.org/ > -- ## subscription configuration (requires account): ## https://lists.exim.org/mailman3/postorius/lists/exim-users.lists.exim.org/ ## unsubscribe (doesn't require an account): ## [email protected] ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
