Hello Team, just now I created two google groups and added few
members to the group.
Whenever Somebody is wanted send the mails they are getting the
following error message. Please let me know the issue. Any help is
appreciated.

Hello abc@gmail.com,

We're writing to let you know that the group you tried to contact
(pecgeniusgroup) may not exist, or you may not have permission to post
messages to the group. A few more details on why you weren't able to
post:


* You might have spelled or formatted the group name incorrectly.
* The owner of the group may have removed this group.
* You may need to join the group before receiving permission to post.
* This group may not be open to posting.

If you have questions related to this or any other Google Group, visit
the Help Center at http://groups.google.com/support/?hl=en_US.

Thanks,

Google Groups