no incomming mail from internet after installing zcs 5.0.18 on centos 5.2.help me pls

[lananhbin]

hi brothers. i'm not native so if u dont understand what i say, pls ask me. i will make it clearer.

i have a centos box. it's behind a firewall and its internal Ip is 192.168.1.a and its external ip is 1.2.3.4 ( NATed )
i made "splt dns" and it seems working fine ( i did exactly as the guide in wiki zimbra page ), my hostname is FQDN
i can send mail internal and to internet ( such as yahoo, gmail ) but i cant receive any email from yahoo or gmail. i googled many times but i cant solve it. pls help me


p/s : i have no domain ( what u can access directly by browser) i only created a domain while installing zcs.

i hope all you guys understand what i say . thanks in advance

[phoenix]

If you don't have an external domain name you won't be able to receive mail, that's how people send mail to you.

[lananhbin]

thanks phoenix for your answer !

i made a free domain (signed up in UNI.CC Network - Free domain name and DNS service. ). i.e lananhbin.uni.cc

so what next steps i should do to receive email from internet ? and the installed zcs's domain should be "lananhbin.uni.cc" ?

i mean the zimbra domain should be match exactly to the domain i owned ( i.e lananhbin.uni.cc)

i'm so sorry if u think that questions are basic or stupid.

thanks in advance

[Dirk]

Yes, create a domain inside zimbra that matches your external domain, then make an email account in that domain in zimbra. So you'd end up with me@lananhbin.uni.cc as an email address.

The trick is making it so email sent to that address reaches you. Consider how email works. If I send a message to that address, it first goes to my server which hands it down the line of the internet looking for the domain. When it reaches the dns servers for that domain, it needs to find your email server next, so you need to tell the DNS records for lananhbin.uni.cc where your email server is.

This is going to be your public IP address at port 25. You'll have to keep it updated if your public ip address changes. With that in, my email can be sent to your public IP, which should be forwarding traffic it gets on port 25 to your internal zimbra server.

I've over smplified the terms here, but in essance you need an MX record adding the the DNS entries for your domain.

[lananhbin]

to Dirk : first, thanks u for your answer. you are so kind !

I own a domain and it pointed to a public ip ( i.e 1.2.3.4 )

I have a zcs running on centos 5.2. it's internal ip is 192.168.1.a and its external ip is 1.2.3.4 ( NATed ). the same public ip with the domain i own. i can telnet to 25 port with both internal ip and external ip.

the domain i installed zcs match exactly to the domain i own.i can send email to internal and external but no incomming email from internet

my hostname is FQDN. i did "split dns" and it seem working fine

pls give me some advices ! i dont know why i cant get email. thanks in advance

[phoenix]

These questions have been answered many times in the forums. Run the following commands on the Zimbra server and post the output:

cat /etc/hosts
cat /etc/resolv.conf
dig yourdomain.com mx
dig yourdomain.com any
host `hostname`  <-- use that exact command with backticks not single quotes

[lananhbin]

to phoenix:. thanks u ! i managed to make it run. i can send and receive email now.thanks for your attention !

to Dirk : you are so kind. i wish u happy all days ^^