Re: [courier-users] 517-Domain does not exist: net4z.de

I would guess that the problem is with the MX hostname "-mforward.dtag.de".
The log reference is to RFC 1035, Sec 2.3.1 of this RFC states:

"The labels must follow the rules for ARPANET host names. They must
start with a letter, end with a letter or digit, and have as interior
characters only letters, digits, and hyphen."

Courier can be very strict about such things.


Thus spake Dirk Kulmsee on Wed, Feb 08, 2006 at 06:42:09AM CST
> Hi list,
>
> I could need some help here with a sender who's mail is not accepted by our
> courier. He can send to other destinations though.
>
> When the mail comes in, the error.log says:
> Feb 8 13:18:46 jupiter courieresmtpd:
> error,relay=::ffff:195.253.8.195,from=<theusername @net4z.de>: 517-Domain
> does not exist: net4z.de.
> Feb 8 13:18:46 jupiter courieresmtpd:
> error,relay=::ffff:195.253.8.195,from=<theusername @net4z.de>: 517 Invalid
> domain, see <URL:ftp://ftp.isi.edu/in-notes/rfc1035.txt>
>
> But when I dig for that domain on the very same machine everything seems ok:
>
> --------------------------------------------
> ; <<>> DiG 9.3.1 <<>> @localhost ns net4z.de
> ; (1 server found)
> ;; global options: printcmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 34320
> ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
>
> ;; QUESTION SECTION:
> ;net4z.de. IN NS
>
> ;; AUTHORITY SECTION:
> net4z.de. 10002 IN SOA ns1.acceptus.de.
> hostmaster.acceptus.net. 2000112938 10800 3600 604800 86400
>
> ;; Query time: 0 msec
> ;; SERVER: 127.0.0.1#53(127.0.0.1)
> ;; WHEN: Wed Feb 8 13:31:56 2006
> ;; MSG SIZE rcvd: 98
> --------------------------------------------
> ; <<>> DiG 9.3.1 <<>> @ns1.acceptus.de ns net4z.de
> ; (1 server found)
> ;; global options: printcmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 36221
> ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 2, ADDITIONAL: 4
>
> ;; QUESTION SECTION:
> ;net4z.de. IN NS
>
> ;; ANSWER SECTION:
> net4z.de. 86400 IN NS NS3.ACCEPTUS.DE.
> net4z.de. 86400 IN NS NS1.ACCEPTUS.DE.
>
> ;; AUTHORITY SECTION:
> NET4Z.DE. 86400 IN NS NS3.ACCEPTUS.DE.
> NET4Z.DE. 86400 IN NS NS1.ACCEPTUS.DE.
>
> ;; ADDITIONAL SECTION:
> NS3.ACCEPTUS.DE. 86400 IN A 212.144.56.133
> NS1.ACCEPTUS.DE. 86400 IN A 212.184.30.2
> NS3.ACCEPTUS.DE. 86400 IN A 212.144.56.133
> NS1.ACCEPTUS.DE. 86400 IN A 212.184.30.2
> --------------------------------------------
> ; <<>> DiG 9.3.1 <<>> @ns1.acceptus.de mx net4z.de
> ; (1 server found)
> ;; global options: printcmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 58323
> ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 2, ADDITIONAL: 2
>
> ;; QUESTION SECTION:
> ;net4z.de. IN MX
>
> ;; ANSWER SECTION:
> net4z.de. 86400 IN MX 100 -mforward.dtag.de.
> net4z.de. 86400 IN MX 20 smtp.de.acceptus.net.
> net4z.de. 86400 IN MX 10 smtp.gate01.acceptus.net.
>
> ;; AUTHORITY SECTION:
> NET4Z.DE. 86400 IN NS NS3.ACCEPTUS.DE.
> NET4Z.DE. 86400 IN NS NS1.ACCEPTUS.DE.
>
> ;; ADDITIONAL SECTION:
> NS3.ACCEPTUS.DE. 86400 IN A 212.144.56.133
> NS1.ACCEPTUS.DE. 86400 IN A 212.184.30.2
>
> --------------------------------------------
>
> I am not sure that the problem is related to courier, but I have no idea
> where to go next.
> Can someone please point me in the right direction?
>
>
> Thanks for your input.
>
> Dirk Kulmsee
>
>
>
>
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