Email routing assp.local domain to destination host

I just set up a test in ISPConfig. And when sending a mail from the mailserver directly i get:

Check if the entry in the ISPConfig Database is correct:

Code:

mysql -u root -p -h 127.0.0.1 -D dbispconfig -e "SELECT transport FROM mail_transport WHERE domain='assp-nospam.org';"

This should return:

 

Looks correct:

Code:

mysql -u root -p -h 127.0.0.1 -D dbispconfig -e "SELECT transport FROM mail_transport WHERE domain='assp-nospam.org';"
Enter password:
+-------------------------+
| transport               |
+-------------------------+
| smtp:[10.10.10.111]:225 |
+-------------------------+


root@host:~# telnet 10.10.10.111 225
Trying 10.10.10.111...
Connected to 10.10.10.111.
Escape character is '^]'.
220 mx.XXXX.fi is ready - using ASSP 2.8.1(23131)

 

Then do some debugging. Send a mail from the server itself with:

Code:

echo "Test email" | mail -s "Test" [email protected]

Check the maillog and see what it does.

 

Hi, actually need make that work before investigating the original issue. Will let you know latter if that fixes also the original isuue.

 

locally with:
echo "Test email" | mail -s "Test" -a "From: [email protected]" [email protected]

works and mail flows to [10.10.10.111]:225

postfix/smtp[1578787]: E628960095: to=<[email protected]>, relay=10.10.10.111[10.10.10.111]:225, delay=2.7, delays=0.01/0.05/0.38/2.3, dsn=2.0.0, status=sent (250 2.0.0 Ok)
postfix/qmgr[1578609]: E628960095: removed

But when using ispaccount and outlook, it still does not deliver to [10.10.10.111]:225

postfix/smtps/smtpd[1579084]: NOQUEUE: reject: RCPT from xxx.fi[xxxx]: 450 4.1.2 <[email protected]>: Recipient address rejected: Domain not found; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<XXX>

 

Domain is registered:

Code:

$ whois assp-nospam.org
Domain Name: assp-nospam.org
Registry Domain ID: 1e1274b6e29f4a26b2c2b5d280e1dd55-LROR
Registrar WHOIS Server: http://whois.registrar.eu
Registrar URL: http://www.openprovider.com
Updated Date: 2024-03-23T12:18:28Z
Creation Date: 2018-02-07T12:18:07Z

But is not found from Name Service:

Code:

$ host assp-nospam.org
Host assp-nospam.org not found: 2(SERVFAIL)

and the error message also says "Domain not found;".
I think I wrote previously postfix checks name service to find out where to send the message. Is this domain local to the machine where you tested? Is the domain visible in ISPConfig Panel Email tab in Domain listing?

 

I've created the entry for transport under "E-Mail Routing" as follows:

Code:

test.de smtp:[10.10.20.20]:2525

Then i've added "test.de" under E-Mail -> Relay Domains and "@test.de" under E-Mail -> Relay Recipients. After that i've checked from an external host with netcat:

Code:

220 mail01.xxxx.com ESMTP Postfix
HELO mail.pyte.dev
250 mail01.xxxx.com
MAIL FROM:<[email protected]>
250 2.1.0 Ok
RCPT TO:<[email protected]>
250 2.1.5 Ok

This seems to work just fine. Using a mailbox that is local to the mail01 server that should route test.de i've tested it with Roundcube:

Code:

Jul  8 08:27:28 mail01 postfix/smtp[1973364]: 2A54BDFB64: to=<[email protected]>, relay=none, delay=30, delays=0.23/0/30/0, dsn=4.4.1, status=deferred (connect to 10.10.20.20[10.10.20.20]:2525: Connection timed out)

Which works fine too. So someting with your entries or setup is wrong.

 

Hello,
I did add the domain (assp-nospam.org) in hosts file pointing to ASSP (10.10.10.111). I did try to add it also as email domain (ISPConfig Panel Email tab in Domain listing), but after that the error changed to "user not found" or something else, as it seems postfix stars then looking the mailbox for email, and it does not exists.

There is also assp.local domain that could be used for this. I also think on ASSP we could use the real local domains and send mail to [email protected], but is there way to relay all mails assp-spam@* to smart host (ASSP)?

 

Is the Domain assp-spam.org listed under "E-Mail Domains" in ISPConfig by chance?

 

No is is not, and if I add it, the error changes to user not found or something.
Its only listed on email relay domains.

 

That's what should happen then. I just wanted to make sure, as you can either use it as local mail domain OR transport, if the domain is listed in both postfix will try to deliver the mail to a local mailbox.

You only need E-Mail Routing, Relay Domain and Relay Recipient to be set. The mail should then be transported to the relay host you've set.

 

You mean like this: Imgur: The magic of the Internet ? Is there any way determinate why it is still complaining this:

Code:

postfix/smtps/smtpd[1579084]: NOQUEUE: reject: RCPT from xxx.fi[xxxx]: 450 4.1.2 <[email protected]>: Recipient address rejected: Domain not found; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<XXX>

 

Well this is strange but i found your problem.
My test worked as test.de is a valid domain with an MX record. Using "thisdomaindoesnotexists.de" results in the same error:

So the only option would be to fake the record in your local dns resolver (unbound) or disable dns lookups in postifx, but that will cause more issues.

Some docs: https://www.postfix.org/postconf.5.html#smtp_dns_support_level