Brief introduction of the application of SendMail in Enterprise Network (II.)

Progress II:

The encrypted forwarding and receiving of mail server in intranet;

Configuration steps:

1. CA server in Sohu.com zone:

1) OPENSSL.CNF:

[Root@mail ~]# vim/etc/pki/tls/openssl.cnf

2) to build the corresponding documents:

[Root@mail ~]# cd/etc/pki/ca/

[Root@mail ca]# mkdir CRL certs newcerts

[Root@mail ca]# Touch Index.txt serial

[Root@mail ca]# echo ">serial"

3) Build the private key of the CA server:

[Root@mail ca]# OpenSSL genrsa 1024 >PRIVATE/CAKEY.PEM

4 the right to change the private key:

[Root@mail ca]# cd/etc/pki/ca/private/