daily otput: rejected mail hosts?

[Anton Shterenlikht]

	From mexas Thu Feb 14 09:51:50 2013
	To: freebsd-questions at freebsd.org
	Subject: daily otput: rejected mail hosts?
	Reply-To: mexas at bristol.ac.uk

	I see in the daily output:

	Checking for rejected mail hosts:
	 172 553 check_mail system.mail exist
	 129 553 check_mail tsvpt014.vpt.co.uk exist
	  43 553 check_mail unix.dedicated.com.tr exist
	  43 553 check_mail ubs.net exist
	  43 553 check_mail localhost.localdomain exist
	  43 553 check_mail journal-cfp.org exist
	  43 553 check_mail italiasito.it exist

	What is that about?

	Is this described somewhere in sendmail manuals?

I got no reply from questions@, so trying my luck here.

Thanks

Anton