[CentOS] Sendmail "Queued mail for delivery"

> Thanks very much for your useful posting.
> The mail is arriving now without delay,
> so the problem must just have been that my remote ISP
> did not like me giving a local address.

Check the full headers of the email you eventually got - you said you
had some "spoofing" going on, essentially.  Your ISP may have held up
the email due to SPF issues or similar.  RFC issues.


-- 
“Don't eat anything you've ever seen advertised on TV”
         - Michael Pollan, author of "In Defense of Food"