Not able create mail account for domain's in Plesk

[sumesh]

Recently I faced an Issue in Plesk control panel in which we are not able to create mail accounts for any of the domain   

We are getting following error:

"Error : mailmng[]: Can"t read encryption key from "/var/lib/plesk/mail/auth/passwd_db_key": No such file or directory () mailmng[]: Failed to initialize encryption cipher "AES--CBC:PKCS" with key "

Cause :

Mail server authentication database key is not present on the server & corrupted "site_isolation_settings.ini"

ls -la /var/spool/postfix/plesk/passwd_db_key
ls: cannot access /var/spool/postfix/plesk/passwd_db_key: No such file or directory

Fix:

cp /usr/local/psa/admin/conf/site_isolation_settings.ini.default     /usr/local/psa/admin/conf/site_isolation_settings.ini

Then run the following,
/usr/lib64/plesk-9.0/mail_auth_dump


This fix the error and we are able to create mail account in Plesk control panel

Try it