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Zombie

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Hello

we try to test the email communication. But we have following error:
Attempt to deliver to unknown recipient <mail address>, from <my mail server>, IP address ***** ->ip from getaway computer.

It is not attack. How I can change unknow recipient to known? So the communication will go whitout any problems?

Thank you.

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pcunix

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Go through to whom?

If you want the particular unknown to go to a particular person, assign an alias.

For example, if it were

Attempt to deliver to unknown recipient <t@aplawrence.com>, from <xxx<_at_>xx.com>, IP address xxx.xxx.xxx

and I wanted "t" to be delivered to me, I'd either add an alias "t" pointing to me or I'd edit my user account and add "t" as an additional email address for myself.

But if I wanted to see ALL random addresses, I'd assign an alias "*" and point that at myself (or more likely some other account that I'd check now and then to see if there happened to be anything other than junk in, although there probably would not be).

See http://manuals.kerio.com/connect/adminguide/en/sect-aliases. html and "Mail Addresses" in http://manuals.kerio.com/connect/adminguide/en/sect-newaccou nt.html

Tony Lawrence
Kerio Preferred Partner and Reseller
Certified for Connect, Control
http://aplawrence.com
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Zombie

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Hello I think it is not this case. I will try to explain once again:

I have 'created on the server mail USER: Test<_at_>myserverdomain.com
To which I conect from my local PC via pop3 manager and view the post.

The first test with interface was ok. Message was sent through the VPN tunnel. Log OK.

In the second test, there was a problem. Message was sent from Getaway, which connects to the mail User: Test<_at_>myserverdomain.com and recipients were: interface which was able to send the message.
Error in the security log: Attempt to deliver to unknown recipient <mail@interface.com>, mail from <Test<_at_>myserverdomain.com> IP address 2.2.2.2 (Getaway from which the message was sent)

How can I eliminate this problem? I want to differentiate between the recipient and the message was sent.

PS:
We tried to change the mail address for the address <mail@interface.com> to colleagues address (getaway@mail.com) that connects to the getaway <Test<_at_>myserverdomain.com>

In this experiment, I received mail messages in the log:
SMTP Service, from <Test@myserverdomain.com>, to <getaway<_at_>mail.com> size XX, Sender-Host: 2.2.2.2 (Getaway from which the message is sent)
Recipient <getaway<_at_>mail.com>, Result, delayed, Status: 4.4.3 DNS lookup failed

Thank you for your help.
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pcunix

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I'm sorry.. are you writing in your native language and using an on-line translator? That's what it looks like and the translation is too rough for me..

I get that "Getaway" was probably "gateway" but I don't see what is really happening here.


Is "interface.com" supposed to be an alias for "myserverdomain.com"?

I don't understand


i want to differentiate between the recipient and the message was sent.

Can you try to rephrase that?

Tony Lawrence
Kerio Preferred Partner and Reseller
Certified for Connect, Control
http://aplawrence.com
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Zombie

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Sorry.

You are right.
1. "Getaway" is "gateway" (our colleague desktop) He use email client for connection to our mail server : myserverdomain.com
2. mail<_at_>interface.com - is mail address from interface, that mean customer who can send the message to our mail server, but we have problem to send it back.
3. "mail<_at_>interface.com" is not and alias. It is interface which are connecting and using our email server: myserverdomain.com"?
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pcunix

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Sigh. I'm sorry, I would really like to help you but I'm not understanding.

Do I understand that INCOMING email works correctly but outgoing does not?

So, you tried to reply to "mail<_at_>interface.com". Is "interface.com" a real domain on the internet or something you have made up locally? Are you running two mail servers, one called mydomain and one called interface??

This doesn't make sense to me either:

We tried to change the mail address for the address <mail@interface.com> to colleagues address (getaway<_at_>mail.com) that connects to the getaway <Test<_at_>myserverdomain.com>

Can you rephrase or elaborate (expand, say more about that)

Tony Lawrence
Kerio Preferred Partner and Reseller
Certified for Connect, Control
http://aplawrence.com
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Zombie

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Thanks.

You are right: INCOMING email works correctly but outgoing does not.

Yes we are trying to reply to mail<_at_>interface.com. And interface.com is a real domain on the Internet.
We are running only one mail server: myserverdomain.com
------------------------------------------------------------ ------------
We tried to change the mail address for the address <mail<_at_>interface.com> to colleagues address (getaway<_at_>mail.com) that connects to the getaway <Test<_at_>myserverdomain.com>

For test we change mail address from interface and we want sent mail to our colleague, which can connect to out mailserver. The we get following error inlog:
SMTP Service, from <Test<_at_>myserverdomain.com>, to <getaway<_at_>mail.com> size XX, Sender-Host: 2.2.2.2 (Getaway from which the message is sent)
Recipient <getaway<_at_>mail.com>, Result, delayed, Status: 4.4.3 DNS lookup failed
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pcunix

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Well, DNS lookup failed simply means that it can't resolve "mail.com" - nothing to do with any particular address there.

Could it be that your local DNS server is resolving "mail.com"? - Kerio is looking for an MX record, not just an ip address.

Tony Lawrence
Kerio Preferred Partner and Reseller
Certified for Connect, Control
http://aplawrence.com
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Zombie

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I will check DNS properties.
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Zombie

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How I can configure mx records for mail<_at_>interface.com ?
My server is domain controller and have own domain...
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pcunix

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Who is responsible for your DNS? That's where you add MX records.

See http://kb.kerio.com/article/essential-dns-records-for-mail-d elivery-and-spam-protection-1223.html

Tony Lawrence
Kerio Preferred Partner and Reseller
Certified for Connect, Control
http://aplawrence.com
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Zombie

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I'm able to do it. I know that it is in DNS.

I have problem to send emails. I can send mail to my mail server. I'm able to receive mails from interfaces via VPN tunnel, but I'm not able send mail back.

PS: FOr receiving mails from interfaces I have to uncheck Checkbox in:
SMTP SERVER/Security options/block it sender's domain was not found in dns
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pcunix

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Sorry - I'm still not understanding what you are trying to tell us.

I give up, sorry.

Tony Lawrence
Kerio Preferred Partner and Reseller
Certified for Connect, Control
http://aplawrence.com
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