email address rejected?

how to fix the problem the email address could not send error says (Address does not match) It is rejected. I checked the blocked address box and it is not there as being blocked. i probably need to check the filtering settings and see if it is in the black list of the filter. Is that what need to be done? The email addresses are correctly spelled and should not be blocked.
quinnqtAsked:
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war1Commented:
Hello quinnqt,

What is the exact error message?  Are you sending to one recipient or a group of addresses?  What email service are you using to send?  Gmail?

Make sure the address is correct, and that it ends in the proper suffix.  If sending to a group, make sure there is a comma between

If you are sending by Gmail, Gmail is very particular about sending to a group of addresses.  All the addresses have to be correct.  Send a smaller group of addresses at one time, and see which address is giviing you problem.

Hope this helps!
war1
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