Icannot login my site , site have sql injection and use Postfixadmin,I take my password from database by sql bug but The data do not match and I cannot login
Your question looks very confusing - it's impossible to understand your question. Please take 5 minutes to describe your problem exactly.
- was the SQL injection in PostfixAdmin or in another site or script?
- you should change all passwords the attacker might have read (if unsure: really all passwords)
- check all database-based software, sites etc. you have for newly added accounts (maybe the attacker created some for himself)
- you can create a new admin user in PostfixAdmin with setup.php
was the SQL injection in another site and use PostfixAdmin