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robertjan

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Hi all,

I have a question about Kerio Mailserver.

When I buy this product, I install it and everything is Kerio then acting like a SMTP server?

I have read some information and looked at screenshots and noticed at the services part in administration that service SMTP can be ran. Someone I know also was running kerio, but he was using the smtp server of his provider.

He once asked me how to use the kerio smtp server. Now my question is, can you send e-mail to external email adresses with Kerio Mailserver using the smtp server in kerio? And if yes, how to configure that in Kerio? So I can tell him how he should do that and that I know it is possible to use it.

I looked at it once and in administration there is SMTP Server cofig part. What should he do there to make the kerio mail server the activemail server for outgoing email.

Thanks a lot.
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cohcon

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Yes, kms is a smtp server and you can have your internet service provider forward all email to the kms server on your lan or you can host it yourself externally or have it hosted elsewhere.

This is a full blown mail server solution. You can send and receive email to and from your domain either external on the internet or privately on your lan.

Register a domain, get an ip, enter it in the network settings on the server, install kms, setup the domain, create users and you are in business...

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robertjan

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Hi,

I checked out the server thing you said yesterday. But it didnt work out.

Services SMTP was running on port 25.
Domains we made that something.nl and type Local (primary)
SMTP Delivery use relay smtp server we choose the pc's ip adress on which kerio was installed. Authentication not cheked and relay control on open relay to make sure the failure is not in authentication.

In pop3 download he just puts pop3 servers of his internet provider.

In users he made two users.

When he logged in on webmail and sent mail he got this message

<no spam mail<_at_>hotmail.com> (xx.xx.xxx.xx: 554 5.0.0 Too many hops (101, max 100), message looping)

So then he decided to try a program a friend gave him. Advanced SMTP server. So he stopped the smtp service in kerio and started that program. and filled in in kerio localhost at relay smtp srever But then he got

<no spam<_at_>hotmail.com> (localhost: 550 Invalid recipient: no spam<_at_>hotmail.com)

while that adress is certainly correct

What is going wrong, he prefers to use the mail server in Kerio, but it doens't look like it's going to work for some reason. probably a config failur.

Can you help him/me?
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cohcon

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It sounds as if your internet provider is blocking smtp. You can connect to your pop3 service on your mailserver to get email from it. However, your provider is probably forcing you to send email through their outgoing smtp server to control spam.

Unless you are on a business line of some sort, you pop from your mail server, you send via their server, otherwise you do both on your server.

If the dns record for your domain is pointing to the ip of your kerio mailserver, you should be able to telnet to it and test it.

For pop: telnet <server> 110
For smtp: telnet <server> 25

If you will tell me your domain name I'll look at your dns records and test it from here or you can private message me here with your contact info and I'll look at it for you...

Conn



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robertjan

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Thanks for your answer.

I'm sure port 25 is open from the provider.

What should be the procedure to sent mail through kerio's smtp server?

Thanks
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cohcon

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You can test this by telneting to the server on port 25.

telnet <server> 25
helo <press enter>
mail from: <valid user><_at_>domain.com
rcpt to: <valid user><_at_>domain.com
Data <press enter>

test <press enter>

<press enter>
.
<press enter>

server should respond with message id and "Message accepted for delivery"

new message should be delivered to the recipient...

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frankxs

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robertjan wrote on Wed, 07 June 2006 14:54

SMTP Delivery use relay smtp server we choose the pc's ip adress on which kerio was installed.
I thought you wanted SMTP direct? If so, don't select use relay, select direct using MX records. Maybe I don't understand your intent?

-Frank

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robertjan

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When i'm doing the telnet thing, the server has to be the ip adress of the pc kerio is running on?

Replying to frankxs

When I choose Deliver directly using DNS MX records then it is sending through the Kerio smtp server?

What are these DNS MX records precisely? Couldn't find it in the manual
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Lyle M

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Understanding Domain Name Services is a fairly important part of properly configuring a mail server. Generally speaking, a DNS server takes a URL and converts it to an IP address that the Internet understands.

The MX records are a specific part of a DNS entry that point to the IP address of the mail server for a specific domain. So, if you send e-mail to the apple.com domain (user<_at_>apple.com), your e-mail server will do a DNS MX lookup and find the IP address for Apple's e-mail server. If you want to check the current MX records for your domain, check out this simple web based tool: www.mxtoolbox.com . Just enter your domain to see if the MX records correctly point to your mail server's IP address.

To configure your mail server I highly suggest contacting whomever manages your DNS to ensure that everything is set up correctly.

The "too many hops" error was likely because you were relaying the outbound message directly back into your own mail server - creating a loop. You can use the deliver directly using DNS MX records option when you have all your DNS issues resolved (and make sure your server's IP interface is pointing to a valid DNS). If your ISP doesn't allow for this, you can use the deliver by SMTP relay option. Again, you'll want to contact your ISP to ensure they want you using their SMTP server as a relay. They can also give you any needed authentication information. In this scenario, your mail server just sends the mail to their SMTP server. Their SMTP server then does all the DNS lookups.

Having a valid DNS MX record for your server won't be needed if you are using KMS to simply grab e-mail from another server's POP account and have no intention of having your server directly receive e-mail from the Internet at large. If you want to post more detailed information about your intended workflow and topology it will make it much easier to assist.

Good luck!
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t.moro

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I've read all the previous messages.
I've understood that a DNS server with a MX record is needed,isn't it?
I've a Win2k server with a forum that for the registration requires an answer to be sent,this machine is connected to the internet with a Domestic adsl connection and I use no-ip to access it from internet.
With the direct mx option all the mail retur back,with the relay smtp I've the 'too many loops' error.
I've to install the Directory system and DNS necessarily?
thanks.
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winkelman

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You do not run your own DNS server, at least not typically. I would recommend very much against it, as you obviously are not very experienced in these matters.

Your KMS only uses MX records of other mailservers when delivering mail. Therefor, in this scenario, your KMS should be able to resolve other server's MX records, hence, it should have the proper DNS configuration. Your own MX record is only neccesary if you want other mailservers to deliver your mail directly to your KMS, and not for example your ISP. In this case, the company that hosts your DNS records should add an MX record to your domain entry and point that towards your KMS.
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frankxs

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t.moro wrote on Mon, 12 June 2006 14:57

...I use no-ip to access it from internet...
In my opinion it is not worth even trying to run your own public mail server without a static public IP. I can tell you now that most large public mail servers block IPs known to be dynamic (whether you use no-ip or not). Save yourself a lot of grief and obtain a static public IP.

-Frank
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t.moro

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ok, but i've to send 20 or 40 emails at week,not an hard work.
However, how i've to set the smtp box of the server? Relay smtp to an external smtp? can I use yahoo or hotmail or someone else?
And i've not understand,I must install a dns into my server or it's
better to have an own dns (for a faster connection)?
thanks, and yes i'm not a "worker" in networking i'm a medical student and i'll make all this for my personal web site that requires email answer for registration (CMS e107)
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freakinvibe

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Well, for the uses you are describing, you would not need your own mail server at all. You could use the mail server of your ISP and get your mails with POP3 or IMAP. You could send your mails through the mail server of your ISP.

Although KMS is quite easy to cofigure, you still need DNS and TCP/IP knowledge to get it working. If you don't have this basic knowledge I'd rather contact your provider and he will set the mail up for you.

Regards, Pascal

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