sohoz wrote:Hotmail customer/users are not receiving any mail from my store 2.0, even if any (hotmail )user forget his password he can't recover his password through forget password option and Order confirmation mail also

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anyone please tell me the configuration of my store ?
NB: Gmail , yahoo and others mails are working.
As a test, try sending email from your store email address to a hotmail address will possibly result in your own mail server creating a failed message send alert that will appear in your inbox, which will include an error "TYPE" code that will tell you what the problem is.
Had same problem with both my stores sending emails to hotmail, even to my own hotmail address, where previously had never had a problem... The result of ever-tightening email security... My 1.5.4.1 store and 2.03.1 stores, both on a vps with same mail server IP address, although both stores on different dedicated IP.
The way to solve this is apply to hotmail to have your mail server's IP address unblocked, which can be initiated via the microsoft help forum. Before you do that, analyse the header information your email's are sending to ensure the highest possible authentication score, which may require additional records or changes to the records in your site's DNS Zone File.
Overall, authenticity of an email and it's supposed sender is a cumulative "score" that is judged on
more than one authentication parameter. So although for shared IP, you may not be able to set things like SPF record for reverse DNS lookup (one of the things that are checked for), accurate MX record in zone file is changeable and should be checked. Especially if the site's hosting has at some stage been migrated, some previous zone file information may also get migrated (so I found out when solving these matters for my own early store which was previously with a different host).
There are also many email header testing websites on the net to provide insight with further header analysis of your site's emails.