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pdsgomes

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Hello,

We have one machine with Windows XP Pro, that has Kerio MAil Server installed, in other machine (gateway) we have Kerio Winroute Firewall.

When we don't have internet connection available, local intranet users have many dificulties when treying to send email's or trying to download from the kerio pop3.

We thought that, if there is no internet, as least all local funcionalities should work with no problems.

Any help would be appreciated.

Kind Regards
Pedro Gomes
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freakinvibe

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Can you specify how your clients are receiving and sending mails. Outlook with POP3 and SMTP? Or are you using the Kerio Connector?

Also how do you do DNS resolution. Are you using a DNS server from the Internet? That could explain the difficulties you are having.

What are the exact difficulties that users are having. Please list exact error messages here, otherwise it is difficult to help.

Dexion AG - The Blackberry Specialists in Switzerland
https://dexionag.ch
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pdsgomes

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Hello,

Sorry about my english and for missing details.

In the client side we have outlook with pop3 and smtp for recieving and sending emails, the error they get is the same if i shutdown the mailserver machine, they can't reach the pop3 and smtp protocol, and if i ping the internal ip of the mailserver, it respondd as normal.

The dns specified on the mailserver machine is the internal ip of the gateway.

thanks
Pedro Gomes
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freakinvibe

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When you are disconnected from the Internet, can you ping the mail server with the host name (not the IP Address)? This should be the host name that is used in Outlook for the POP3 and SMTP server.

Which DNS host is specified on the clients?

Dexion AG - The Blackberry Specialists in Switzerland
https://dexionag.ch
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pdsgomes

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Hello,

the hostname of the mailserver is "webmail2", and the ip is 194.69.70.243 (the clients have the ip in the pop3 and smtp configuration, in outlook.

the dns host for the clients is the ip address of the gateway.

Kind Regards
Pedro Gomes
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freakinvibe

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But that is an official IP address, which is only reachable via Internet. If this server should be reachable without Internet Connection it must have an internal IP address.

[Updated on: Wed, 27 January 2010 15:00]


Dexion AG - The Blackberry Specialists in Switzerland
https://dexionag.ch
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pdsgomes

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hi,

What you mean is that i must change all the ip adresses of the internal network to an 192.168.xxx.xxx ou 10.0.0.xxx ?

Is there any possibility to configure 194.69.xxx.xxx to be internal network ip's?

I Know if there is a website with this ip's i cannot reach.

Pedro
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freakinvibe

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Please read

http://www.faqs.org/rfcs/rfc1918.html

The Internet Assigned Numbers Authority (IANA) has reserved the following three blocks of the IP address space for private internets:

10.0.0.0 - 10.255.255.255 (10/8 prefix)
172.16.0.0 - 172.31.255.255 (172.16/12 prefix)
192.168.0.0 - 192.168.255.255 (192.168/16 prefix)

It is strongly recommended to use one of those ranges for your internal network, otherwise you will get all sorts of routing issues.

Dexion AG - The Blackberry Specialists in Switzerland
https://dexionag.ch
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pdsgomes

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Hello,

I really understand the importance of making a huge change, but at this time it is impossible, so that, is there any way to make our range of 194.69.70.0 to 194.69.70.255 as local adresses?

Can we define that in kerio winroute firewall?

Best Regards
Pedro Gomes
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freakinvibe

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It is possible, but for that we would need your network plan with all IP addresses included, router config, client config etc.

Without knowing the details of your officially unsupported network setup it is impossible to find and correct the errors.

I suspect that - as your KMS server has an official IP address - the clients try to go via the Internet to access it. That's why they can't reach it when you disconnect the Internet.

Or the clients can only do DNS lookups while they are connected the the Internet due to your DNS client config.

Dexion AG - The Blackberry Specialists in Switzerland
https://dexionag.ch
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pdsgomes

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Hello,

Well, out network is configured with the folloowing range of ip's :

194.69.70.1/255.255.255.0 to 194.69.70.254/255.255.255.0

Our gateway/dns of the clients is the 194.69.70.245 (this is the ip of the kerio winroute firewall.

Thanks
Pedro Gomes
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freakinvibe

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From the client can you do a

ping webmail2

Please post the ping output here

Dexion AG - The Blackberry Specialists in Switzerland
https://dexionag.ch
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pdsgomes

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C:\Documents and Settings\Administrador>ping webmail2

A fazer ping para webmail2 [194.69.70.243] com 32 bytes de dados:

Resposta de 194.69.70.243: bytes=32 tempo<1 ms TTL=128
Resposta de 194.69.70.243: bytes=32 tempo<1 ms TTL=128
Resposta de 194.69.70.243: bytes=32 tempo<1 ms TTL=128
Resposta de 194.69.70.243: bytes=32 tempo<1 ms TTL=128

Estatísticas de ping para 194.69.70.243:
Pacotes: Enviados = 4, Recebidos = 4,
Perdidos = 0 (perda: 0%),
Tempo aproximado de ida e volta em milissegundos:
Mínimo = 0ms, Máximo = 0ms, Média = 0ms

C:\Documents and Settings\Administrador>
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freakinvibe

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OK, so the DNS is working. Can you now post your Outlook config regarding POP3 and SMTP:

Server Information
------------------

- Account Type = ?
- Incoming Mail Server = ?
- Outgoing Mail Server = ?

Dexion AG - The Blackberry Specialists in Switzerland
https://dexionag.ch
pdsgomes

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Hello,

Account type: POP3

Incomming : 194.69.70.243
Outgoing : 194.69.70.243
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