If I try to email flamingomiami.com from my cendyn.com or tipsontripsandcamps.com domain I get the below undeliverable message. However I can email that address and get a reply from the recipient using AOL or Yahoo.
Unknown user: firstname.lastname@example.org
RCPT TO generated following response:
550 5.1.1 No such user h34si1677928wxd
We use Ipswitch Imail. 2 versions Imail 8.22 and Imail 2006.21
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