unable to reach bsd-lists via mail

[Christopher J. Ruwe]

On Sat, 18 Jun 2011 15:57:08 -0400
Daniel Staal <DStaal at usa.net> wrote:

> On Saturday, June 18, 2011 11:53:57 AM Christopher J. Ruwe wrote:
> > I have a problem with my mail-server configuration so that mail sent
> > will not reach any freebsd adresses. The solutions offered in
> > similar mails already accessible via various archives did not
> > help :-(
> > 
> > I usually send mail from the domain cruwe.de with the mail-server
> > mail.cruwe.de.
> > 
> > My configration is as such, that
> > 
> > $ host cruwe.de
> > cruwe.de has address 188.40.164.98
> > cruwe.de mail is handled by 10 mail.cruwe.de.
> > 
> > and
> > 
> > $ host mail.cruwe.de
> > mail.cruwe.de has address 188.40.164.98
> > mail.cruwe.de mail is handled by 10 mail.cruwe.de.
> [snip]
> > 
> > seems to be OK.
> > 
> > Does anyone have an idea what could be the issue?
> > 
> > Thank you, cheers
> 
> What does you mailer return as the hostname?  (Not the box on which
> your mailer is runing, but the mail server itself.  Often it can be
> set seperately.)  The FreeBSD lists are picky about having that match
> the DNS entries for your domain.
> 
> Daniel T. Staal
> 
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I am not entirely sure what you mean with what the mailer returns as
hostname. The setup is as such, that cruwe.de is a FreeBSD box and
mail.cruwe.de is a jail on cruwe.de, to which the mail ports are
forwarded by packet filter. Both cruwe.de and mail.cruwe.de are
addressed with A records.

The mailer answers "220 mail.cruwe.de ESMTP Postfix" when telnet'ed, so
I guess that is what the mailer returns as hostname.

I did not know about that DNS/rDNS issue ...

$ dig mail.cruwe.de 
; <<>> DiG 9.4.3-P4 <<>> mail.cruwe.de
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 2343
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;mail.cruwe.de.                 IN      A

;; ANSWER SECTION:
mail.cruwe.de.          168     IN      A       188.40.164.98

;; Query time: 1 msec
;; SERVER: 83.133.84.53#53(83.133.84.53)
;; WHEN: Sun Jun 19 00:15:13 2011
;; MSG SIZE  rcvd: 47



$dig -x 188.40.164.98
; <<>> DiG 9.4.3-P4 <<>> -x 188.40.164.98
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 23225
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;98.164.40.188.in-addr.arpa.    IN      PTR

;; ANSWER SECTION:
98.164.40.188.in-addr.arpa. 57111 IN    PTR     vs532.sys-central.de.

;; Query time: 1 msec
;; SERVER: 83.133.84.53#53(83.133.84.53)
;; WHEN: Sun Jun 19 00:16:08 2011
;; MSG SIZE  rcvd: 78

(The server is a rented virtual machine.) Am I right that I need to set
the rDNS of 188.40.164.98 to mail.cruwe.de to make the freebsd.org
servers accept my mail or that, should I set the rDNS to cruwe.de, I
should make the mailer on mail.cruwe.de identify itself as cruwe.de
instead of mail.cruwe.de?

Anyway, thank you very much for your help,
-- 
Christopher J. Ruwe
TZ GMT + 2