[imp] Can You Help Us

[John Paul. A]

Dear Sir,
 I am working as a Software Engineer in CIIL. We have a Red Hat Linux 7.2 Email 
Server. We are using IMP 2.2.7 as a sendmail agent. 
 We have few queries in our mind ? Can you help us..
 
 We need the linux command to...

 1> How to create an User Email Account and set password ?
 2> How to change the password ?
 3> How to delete the email account ?

 Our Mail Server was configured with IMP 2.2.7 properly and we are using it 
currently with 200 users. There is no problem with IMP. 

 Waiting for your favourable reply.

Regards,
John