Re: Postfix DNS-problem
Hi, On Sat, Oct 02, 2004 at 04:10:01AM +0200, Rosenegger, Korbinian wrote: I have trouble setting up Postfix (2.1.4-5) sending mail (receiving mail works fine) on an up to date sarge system. I have no local DNS-server running on that machine. DNS queries with dig or host works fine! My Problem: When I try to send mail with Postfix (i.e. to [EMAIL PROTECTED]), Postfix starts a correct DNS-query for the MX-Record of web.de. (I have done a tcpdump to verify that). Postfix also gets the correct answer (mx-ha01.web.de in this example). But than postfix didn't start a DNS-query for the A-Record of the MX-Host (as I can see in the output from tcpdump). Instead Postfix writes to syslog: Sep 28 17:34:56 host postfix/smtp[12455]: warning: no MX host for web.de has a valid A record Why can Postfix start an correct DNS-query for the MX-Record but isn't going to ask the DNS-server for the A-Record of the MX-Host? I just had exactly the same problem, took about an hour to find the problem. Just before the problem first appears i remounted /var with the noexec flag. Remounting without this flag solved the problem. I hope this information helped you. sorry for my very late answere, but I was very busy last week. That was exactly the problem. Now everything works fine! Thanks a lot Florian -- gpg-key: http://yola.in-berlin.de/rossol.gpg Bitte keine Dateien in proprietären Formaten versenden. Siehe http://www.fsf.org/philosophy/no-word-attachments.de.html -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Postfix DNS-problem
I had this problem a few weeks ago. I don't know exactly why it was happen. My solution (it worked for me): $ rm -rf /var/spool/postfix $ apt-get --reinstall install postfix I didn't find the error, so i reinstall postfix. I know it isn't the best solution, but it work :-) El jue, 30-09-2004 a las 16:32 +0200, Florian Rossol escribió: On Wed, Sep 29, 2004 at 09:45:03PM +0200, Emmanuel Lacour wrote: Maybe your postfix is chrooted (in /var/spool/postfix) and maybe the /var/spool/postfix/etc/resolv.conf is not up to date with your /etc/resolv.conf? No, it isn't chrooted. From /etc/postfix/master.cf: ---(schnipp)--- # == # service type private unpriv chroot wakeup maxproc command + args # (yes) (yes) (yes) (never) (100) # == smtp inet n - - - - smtpd ---(schnapp)--- and also /etc/resolv.conf and /var/spool/postfix/etc/resolv.conf are equal: ---(schnipp)--- [EMAIL PROTECTED]:~$ md5sum /etc/resolv.conf /var/spool/postfix/etc/resolv.conf 8525815faa23daf5c6bb84750e61ca49 /etc/resolv.conf 8525815faa23daf5c6bb84750e61ca49 /var/spool/postfix/etc/resolv.conf ---(schnapp)--- Any other ideas? Thanks! Florian -- gpg-key: http://yola.in-berlin.de/rossol.gpg Bitte keine Dateien in proprietären Formaten versenden. Siehe http://www.fsf.org/philosophy/no-word-attachments.de.html -- suela [EMAIL PROTECTED]
Re: Postfix DNS-problem
On Thu, Sep 30, 2004 at 04:32:10PM +0200, Florian Rossol wrote: No, it isn't chrooted. From /etc/postfix/master.cf: ---(schnipp)--- # == # service type private unpriv chroot wakeup maxproc command + args # (yes) (yes) (yes) (never) (100) # == smtp inet n - - - - smtpd ---(schnapp)--- It is, - means default = yes ... Any other ideas? not yet ... :/ -- Emmanuel Lacour Easter-eggs 44-46 rue de l'Ouest - 75014 Paris - France - Métro Gaité Phone: +33 (0) 1 43 35 00 37- Fax: +33 (0) 1 41 35 00 76 mailto:[EMAIL PROTECTED] -http://www.easter-eggs.com -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Postfix DNS-problem
Hi I have trouble setting up Postfix (2.1.4-5) sending mail (receiving mail works fine) on an up to date sarge system. I have no local DNS-server running on that machine. DNS queries with dig or host works fine! My Problem: When I try to send mail with Postfix (i.e. to [EMAIL PROTECTED]), Postfix starts a correct DNS-query for the MX-Record of web.de. (I have done a tcpdump to verify that). Postfix also gets the correct answer (mx-ha01.web.de in this example). But than postfix didn't start a DNS-query for the A-Record of the MX-Host (as I can see in the output from tcpdump). Instead Postfix writes to syslog: Sep 28 17:34:56 host postfix/smtp[12455]: warning: no MX host for web.de has a valid A record Why can Postfix start an correct DNS-query for the MX-Record but isn't going to ask the DNS-server for the A-Record of the MX-Host? I just had exactly the same problem, took about an hour to find the problem. Just before the problem first appears i remounted /var with the noexec flag. Remounting without this flag solved the problem. I hope this information helped you. cu Korbi -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Postfix DNS-problem
On Wed, Sep 29, 2004 at 09:45:03PM +0200, Emmanuel Lacour wrote: Maybe your postfix is chrooted (in /var/spool/postfix) and maybe the /var/spool/postfix/etc/resolv.conf is not up to date with your /etc/resolv.conf? No, it isn't chrooted. From /etc/postfix/master.cf: ---(schnipp)--- # == # service type private unpriv chroot wakeup maxproc command + args # (yes) (yes) (yes) (never) (100) # == smtp inet n - - - - smtpd ---(schnapp)--- and also /etc/resolv.conf and /var/spool/postfix/etc/resolv.conf are equal: ---(schnipp)--- [EMAIL PROTECTED]:~$ md5sum /etc/resolv.conf /var/spool/postfix/etc/resolv.conf 8525815faa23daf5c6bb84750e61ca49 /etc/resolv.conf 8525815faa23daf5c6bb84750e61ca49 /var/spool/postfix/etc/resolv.conf ---(schnapp)--- Any other ideas? Thanks! Florian -- gpg-key: http://yola.in-berlin.de/rossol.gpg Bitte keine Dateien in proprietären Formaten versenden. Siehe http://www.fsf.org/philosophy/no-word-attachments.de.html -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Postfix DNS-problem
On Wed, Sep 29, 2004 at 08:49:14PM +0200, Florian Rossol wrote: Hi, But than postfix didn't start a DNS-query for the A-Record of the MX-Host (as I can see in the output from tcpdump). Instead Postfix writes to syslog: Maybe your postfix is chrooted (in /var/spool/postfix) and maybe the /var/spool/postfix/etc/resolv.conf is not up to date with your /etc/resolv.conf? -- Emmanuel Lacour Easter-eggs 44-46 rue de l'Ouest - 75014 Paris - France - Métro Gaité Phone: +33 (0) 1 43 35 00 37- Fax: +33 (0) 1 41 35 00 76 mailto:[EMAIL PROTECTED] -http://www.easter-eggs.com -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
