postfix: does not update.

I have a problem with file, after editing it does not update, why?

mydestination directives:
mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain

#rcpostfix reload

#postconf | grep mydes

mydestination = mydomain.internal
proxy_read_maps = $local_recipient_maps $mydestination $virtual_alias_maps $virtual_alias_domains $virtual_mailbox_maps $virtual_mailbox_domains $relay_recipient_maps $relay_domains $canonical_maps $sender_canonical_maps $recipient_canonical_maps $relocated_maps $transport_maps $mynetworks $sender_bcc_maps $recipient_bcc_maps $smtp_generic_maps $lmtp_generic_maps
relay_domains = $mydestination

restart, don’t reload - reload doesn’t re-read the configuration.

Postfix reload does not seem to work either.

I have initially configured postfix using Yast/Sysconfig Editor, would that make any difference.?

Hi every one,

I new to Linux and have another question. what does export MAIL=/var/mail/root accomplish. I have many users who would like receive their e-mails locally.

Should I export MAIL/var/mail/user for every user.