postfix

*** Adding a user in postfix

Add the user to the server first:
1. useradd -s /bin/false <username>
2. passwd <username>

Add the user's email alias to the server:

1. add the user in /etc/postfix/virtual 
2. run postmap /etc/postfix/virtual
3. if the domain is new add the domain to accept mail for in /etc/postfix/mydomains
4. run postmap /etc/postfix/mydomains

# enabling starttls - just add the following
smtpd_tls_cert_file = /etc/pki/tls/certs/2008-www.myjobsearcher.com.crt
smtpd_tls_key_file = /etc/pki/tls/private/2008-www.myjobsearcher.com.key
smtpd_tls_CAfile = /etc/pki/tls/certs/gd_bundle.crt
smtpd_tls_security_level = may
tls_random_source = dev:/dev/urandom
tls_smtp_use_tls = yes

# if necessary you can add the following as well
#smtpd_tls_log_level = 1
#smtpd_tls_received_header = yes
#smtpd_tls_auth_only = no
#smtp_use_tls = yes
#smtpd_use_tls = yes
#smtp_tls_note_starttls_offer = yes