Subject: Undelivered Mail Returned to Sender

From: [email-masked] (Mail Delivery System)
Date: Fri, 9 May 2025 11:42:19 -0400 (EDT)

This is the mail system at host mail.cooperhotels.com.

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

<[email-masked]>: host 127.0.0.1[127.0.0.1] said: 554 5.4.0
    id=26139-02 - Rejected by next-hop MTA on relaying, from
    MTA(smtp:[127.0.0.1]:10025): 554 5.4.0 Error: too many hops (in reply to
    end of DATA command)