Good Question For postfix Experts
 

Help needed
Dear linux users , i have just migrated to linux i dont have much knowledge about linux . I need help on postfix-2.0.16-3 configuration.

Notes
1. I have a registered domain name. ( mydomain1.com )

2. I have 2 PCs on my LAN both of them having their IP 's NAT differently

Lets say PC AA and PC BB

PC AA is hosting my domain ( mydomain1.com ) {O/S windows 2000}
PC BB is hosting postfix ( BB.mydomain1.com ) {O/S redhat Linux 9.0}

3. PC AA has no A and MX records configured. only mydomain1.com configured just
for my webpage.

HELP HELP

HOW DO I CONFIGURE POSTFIX TO RECEIVE MAIL FOR mydomain1.com
i.e main.cf , master.cf , bind , MX ,A records etc.....

i have surffed the internet for docs related to this topic but all in vein

I can send mail to internet say user@hotmail.com
but i can't receive when i reply to that mail.

i can also send and receive mail only on LAN



main.cf
/////////////////////////////////////////////////////////////////////////////////////
alias_database = hash:/etc/postfix/aliases
alias_maps = hash:/etc/postfix/aliases
command_directory = /usr/sbin
config_directory = /etc/postfix
daemon_directory = /usr/libexec/postfix
debug_peer_level = 2
default_privs = nobody
inet_interfaces = all
local_destination_concurrency_limit = 2
local_recipient_maps = unix:passwd.byname $alias_maps
mail_owner = postfix
mail_spool_directory = /var/spool/mail
mailbox_command = /usr/bin/procmail -a "$EXTENSION"
mailq_path = /usr/bin/mailq.postfix
manpage_directory = /usr/share/man
mydestination = $myhostname, localhost.$mydomain, $mydomain
mydomain = ekinata.com
myhostname = moses.ekinata.com
mynetworks = 192.168.0.0/24, 195.128.33.0/24, 127.0.0.0/8
mynetworks_style = subnet
myorigin = $mydomain
newaliases_path = /usr/bin/newaliases.postfix
queue_directory = /var/spool/postfix
readme_directory = /etc/postfix/README_FILES
relay_domains = $mydestination
relay_recipient_maps = hash:/etc/postfix/relay_recipients
sample_directory = /etc/postfix/samples
sendmail_path = /usr/sbin/sendmail.postfix
setgid_group = postdrop
smtpd_banner = $myhostname ESMTP $mail_name ($mail_version)
unknown_local_recipient_reject_code = 450
//////////////////////////////////////////////////////////////////////////////////////

Are you blocking that port with iptables? /etc/rc.d/init.d/iptables is Red Hat's default proxy and it seems like that might sound like your problem. I am not all that experienced with iptables but I hope I can point you in the right direction. Sorry if it doesn't help.

Jeff Smith

iptables
 

i am not sure .. how can itell that i am blocking it ???
using
/etc/rc.d/init.d/iptables

i only use /etc/rc.d/init.d/postfix start for reloading and stopping postfix
coud these be the problem

Re: Good Question For postfix Experts
 

Ok, i'm missing something here. You say that you didn't have any A or MX record configured right? So I assume that you are not running a dns server and have that part hosted by an isp. In the dns you need:

An MX record, which has the IP address of the mail-server together with a name e.q mail.yourdomain.com, so every mail-server on the internet is able to get MX info out of the dns and deliver it to your machine.

I'm unsure what you exactly mean, because of the dns part (which you are actually not running right?

Hope this helps,

thanks very much
 

Thanks alot for your help

i configured the MX records on PCAA to point to PCBB
and now its working fine

Thanks alot thanks