[SOLVED] Receiving email by IP address - @IP

[jetorres]

Just installed Zimbra in Ubuntu 8.04 LTS on Sun Virtual Box.
Everything is OK and running smoothly.

The Virtual Box is using Hosted Mode so is acting as a server belonging to my internal network, as my network is behind a firewall with an external/public/Internet IP address.

I would like to configure Zimbra to receive emails as normal but also with the External IP address. username@xxx.xxx.xxx.xxx.

I am migrating from a MS Exchange Server to Zimbra. Exchange could do it, so I guess Zimbra can do it too.

Could anyone help me with this configuration?

[phoenix]

I guess you've searched the forums and wiki for an answer? As you're behind a firewall try setting up a Split DNS.

[uxbod]

To stop Postfix from performing a MX lookup against the domain element of the email address you would need to specify it as username@[xxx.xxx.xxx.xxx].

[jetorres]

I have not done the splitDNS procedure yet, is complex for me.

This is an email by IP test using CentralOPS.net utilities:

Email Dossier Investigate email addresses
email address

user: 144.aaa.bbb.ccc [anonymous] 47/50
log in | get account


Validating adenawar@[144.aaa.bbb.ccc]...

Validation results
confidence rating: 0 - Bad address
error : RecipientRejected - Mail server rejected the email address.
canonical address:

MX records
preference exchange IP address (if included)
0 [144.aaa.bbb.ccc]

SMTP session
[Contacting [144.aaa.bbb.ccc]...]
[Connected]
220 ubuntuzimbra.demosys.coneco.local ESMTP Postfix
EHLO hexillion.com
250-ubuntuzimbra.demosys.coneco.local
250-PIPELINING
250-SIZE 10240000
250-VRFY
250-ETRN
250-STARTTLS
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN
MAIL FROM:
250 2.1.0 Ok
RCPT TO:
554 5.7.1 : Relay access denied
[Address has been rejected]
RSET
250 2.0.0 Ok
QUIT
221 2.0.0 Bye
[Connection closed]



-- end --
URL for this output | return to CentralOps.net, a service of Hexillion

[uxbod]

Have you added the IP as a domain alias otherwise ZCS will not know where to deliver the email ?

[jetorres]

I added a secondary domain with the external IP and created a test account using the Admin Web Console.

Is this the same as adding a domain alias?

Now the secondary domain answer the recipient by IP requests.

Email Dossier Investigate email addresses
email address

user: 144.aaa.bbb.ccc [anonymous] 46/50
log in | get account


Validating adenawar@[144.aaa.bbb.ccc]...

Validation results
confidence rating: 3 - SMTP
The email address passed this level of validation
without an error. However, it is not guaranteed to be
a good address. more info
canonical address:

MX records
preference exchange IP address (if included)
0 [144.aaa.bbb.ccc]

SMTP session
[Contacting [144.aaa.bbb.ccc]...]
[Connected]
220 ubuntuzimbra.demosys.coneco.local ESMTP Postfix
EHLO hexillion.com
250-ubuntuzimbra.demosys.coneco.local
250-PIPELINING
250-SIZE 10240000
250-VRFY
250-ETRN
250-STARTTLS
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN
MAIL FROM:
250 2.1.0 Ok
RCPT TO:
250 2.1.5 Ok
RSET
250 2.0.0 Ok
QUIT
221 2.0.0 Bye
[Connection closed]



-- end --
URL for this output | return to CentralOps.net, a service of Hexillion

[jetorres]

If this is the correct way to create the domain alias, then now I need a way to map/alias each account on primary domain to the secondary domain

[mmorse]

To make that @x.x.x.x an alias: Managing Domains - Zimbra :: Wiki

Regarding @domain.com usage:
If you have lan.ip & public.ip (NAT) for your zimbra server, you probably still want a split dns; such that dig zimbra.domain.com internally you're resolving the lan.ip of the server, and from the outside the public.ip of the server.

[jetorres]

My Zimbra server has a Lan IP and then I have a firewall/router with the Public IP that port forward the connections to the internal server. The local Domain DNS is not public, what I have is a Managed DNS that has the MX record addresing to my external IP. Then I created an MX record internally for the internal email clients to use the Zimbra server as the SMTP server.

Is this the same framework you (mmorse) are describing? I don't know the word 'dig'.

[jetorres]

As far as the original question, the answer I followed/gather in this thread is the following: create a secondary domain or an alias domain with the name format [xxx.aaa.bbb.ccc] where xxx.aaa.bbb.ccc is the external/public IP address, have my router/firewall routing the SMTP/25 port to the Zimbra server, then follow the "Managing Domains - Zimbra :: Wiki" to create the account alias from the primary domain to the secondary/alias domain.

As off what is the best way to have the same results with better performance is another discussion. But I am not an expert in Linux nor Zimbra so it would be better for someone else to take over this thread.

Also would be nice to be more descriptive as for a novice like me could understand.

Thank you very much for your promptly responses and good help.

Jose E.