[Mailman-Users] can not add subscribers to list

[cwieland at uci.edu]

I have one list that will not add subscribers. I get this in the logs:

subscribe:Jun 26 20:35:40 2018 (24695) cogsci-aic: pending "thehdguy at cathyscorner.us" <thehdguy at cathyscorner.us>  128.200.115.74

but it adds -owner to the address so the email fails

Jun 26 20:35:41 department-lists postfix/smtp[24704]: 4A37512C057: to=<thehdguy-owner at cathyscorner.us>, relay=vade-in1.mail.dreamhost.com[66.33.205.212]:25, delay=0.49, delays=0.02/0.01/0.42/0.05, dsn=5.7.1, status=bounced (host vade-in1.mail.dreamhost.com[66.33.205.212] said: 550 5.7.1 <thehdguy-owner at cathyscorner.us>: Recipient address rejected: User unknown. (in reply to RCPT TO command))

I have looked thru the configuration and can not find anything unusual. Theis server has 100’s of lists. A quick check and other lists all seem to be working as expected. 

Any ideas would be greatly appreciated.

Best,
Con Wieland