I'm having trouble with Outlook rejecting emails from multiple friends in the Czech republic, many using large service providers and defintley more than one. Seznam is a large service in Czech yet even they got blocked. 

Is anyone else having trouble with outlooks mail service blocking mails, even if your not from the Czech republic?

I'm annoyed as Microsoft don't appear to have any feedback forms at all for blocked email providers (several, at the same time? Really/??) and this is new behaviour which I can't report to them? How do you report faults or is this why people change to other email providers.

Example below which seems to show why there emails are getting to me, any comments on how to complain to microsoft or what to do from my side appreciated

You message for <########@hotmail.com> from 2013/10/15 could not be delivered.

Důvod / Reason:
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5.0.0 smtp; 550 SC-002 (BAY0-MC3-F13) Unfortunately, messages from 77.75.72.26 weren't sent. Please contact your Internet service provider since part of their network is on our block list. You can also refer your provider to http://mail.live.com/mail/troubleshooting.aspx#errors.

Permanent Failure - Other or Undefined Status
we are using outlook 2011 and moved mail providers to google and enabled IMAP.  When we send an email it shows up in duplicate in the IN BOX verses one copy in sent mail.  we have verified out settings.  any ideas?   thank you