Re: Postfix error question

From: Ryan Knopp (ryanrk_at_NO_SPAM_PLEASEtheknopps.com)
Date: 02/05/04 

Date: Wed, 04 Feb 2004 19:40:22 -0800

Bit Twister wrote:
> On Wed, 4 Feb 2004 16:18:47 -0800, Ryan Knopp wrote:
>
>>I setup postfix main.cf and stuff and now when I send an email to my
>>account I get the following error message in my inbox.
>>
>>
>>>>Name service error for name=localhost type=A: Host not found>>
>>>>127.0.0.1 localhost
>>>>192.168.0.101 localhost
>>
>>Any ideas
>
>
> Please read http://www.catb.org/~esr/faqs/smart-questions.html
> It always helps to provide which distrigution and release when you post
> questions. It helps us give better answers.
>
> I would change the hostname, you know something catchy like darkstar.
>
> You can find hostname configuration files with this command
> find /etc -type f -name "*" -print | xargs grep -I $(hostname)
>
> For Redhat/Makdrake here are snippets from some of my Mandrake files
> which set hostname, ip address, or used in resolving/setting
> hostnames/ip addresses.
>
>
> cat /etc/sysconfig/network
> NETWORKING=yes
> HOSTNAME=wb.home.invalid <==============
> GATEWAY=12.209.206.1
> GATEWAYDEV=eth0
>
> cat /etc/hosts
> 127.0.0.1 localhost.localdomain localhost
> 192.168.1.10 wb.home.invalid wb <==============
>
>
> Anytime you change the host name, logout of the desktop manager and do a
> source /etc/sysconfig/network
> hostname $(HOSTNAME)
> uname -n
> service network restart
> That will test what hostname will be on next boot.
>
> Next two files are used during host/ip resolution
> cat /etc/host.conf
> order hosts,bind
> multi on
>
> grep hosts: /etc/nsswitch.conf
> hosts: files nisplus nis dns
>
> grep myhostname /etc/postfix/main.cf
> myhostname = wb.home.invalid <==============
>
>
> If you changed /etc/hosts and using postfix
> cp /etc/hosts /var/spool/postfix/etc/hosts
> or changed /etc/postfix/main.cf
> service postfix restart
>
> You need to setup your MTA anyway to get messages from cron jobs.
>
> You can find the postfix documentation with the command
> locate doc/postfix | grep index.htm
> cut/paste something like
> /usr/share/doc/postfix-2.0.13/html/index.html
> into your browser.
>
> Before I modify a file for the first time, I copy it to same_name_orig
> man diff for more information.
>
> diff legend:
> lines with < is the before change. line
> lines with > is the after change. line
> lines with numbers contain the line and character location of changes.
>
>
> I setup postfix so that root email is routed to my user account.
>
> I modified aliases to send root's email to bittwister:
>
> cd /etc/postfix
>
> diff aliases_orig aliases
> 80c80,81
> < root: postfix
> ---
>
>>root: bittwister
>
>
> I generated the aliases.db with postalias aliases
>
> More and more postmasters are rejecting email if they can not verify
> that the Return-Path contains a valid email account in a registered domain.
> All mail sent from bittwister appears to come from my ISP email account.
>
> I modified canonical with the following line
> bittwister my_email_addy@attbi.com
>
> I generated the hashed canonical.db with the command
> postmap canonical
>
> I modified main.cf with my isp/local host.domain
> and added the sender_canonical_map line.
>
> diff main.cf_orig main.cf
> 68a69
>
>>myhostname = wb.home.invalid
>
> 75a77
>
>>mydomain = home.invalid
>
> 306a309
>
>>relayhost = smtp.comcast.net
>
> 378c381
> < alias_maps = hash:/etc/postfix/aliases, hash:/var/lib/mailman/data/aliases
> ---
>
>>#alias_maps = hash:/etc/postfix/aliases, hash:/var/lib/mailman/data/aliases
>
> 380a384
>
>>alias_maps = hash:/etc/postfix/aliases
>
>
> You need to hash all the database files to create the following:
> ls -1 *.db
> access.db
> aliases.db
> canonical.db
> relocated.db
> transport.db
> virtual.db
>
> if you do not have a .db file do a
> postmap filename_without_dot_db
> for the above.
>
> example:
> postmap access
> postmap canonical
> postmap relocated
> postmap transport
> postmap virtual

>
>
> After I change anything I do a
> postfix stop # may not be running
> cp /dev/null /var/log/mail/errors
> cp /dev/null /var/log/mail/info
> cp /dev/null /var/log/mail/warnings
> cp /etc/resolv.conf /var/spool/postfix/etc/resolv.conf
> postfix start
>
> and check the /var/log/mail/* logs for errors.
>
> The cp /var/spool/postfix/etc/resolv.conf is because I am on dhcp
> from my isp and the spool copy needs to match the /etc copy.
>
> You might find some help in the debug file found with
> locate -i postfix | grep -i doc | grep -i debug
>
> You then cut/paste something like
> /usr/share/doc/postfix-2.0.6/README_FILES/DEBUG_README
> into your browser.
>
> Other docs found at
> http://www.mandrakeuser.org/docs/connect/index.html#mtuw
>
>
> You can test with
> mail -s "subject string" whoever@wherever < /dev/null

Thanks a lot! Your message and that link to mandrakeuser.org helped a
lot. I figured out it was my hosts file in /etc/hosts. So now it
recieves email just fine, however I have another small issue. If I do a
raw smtp message from a telnet program using the SMTP protocol commands
the mail sends ok. When I go into the console and type mail it's not in
my mailbox but if I go and type mailq it shows it in the queue without any
errors being present.

-Queue ID- --Size-- ----Arrival Time---- -Sender/Recipient-------
2BFBB1F082 349 Wed Feb 4 19:35:28 ryan@thedomain.com
                                          ryan@thedomain.com

-- 0 Kbytes in 1 Request.

I tried getting the mail using POP3 but it doesn't download into my mail
program. It logins in ok but says there isn't any messages. I notice the
queue_directory is located at /var/spool/postfix and I have a file with my
account name on it. Am i missing something somewhere? I'm using SUSE 9.0
with the postfix RPM.

Thanks
Ryan

Relevant Pages

  • Re: Postfix error question
    ... I would change the hostname, you know something catchy like darkstar. ... I setup postfix so that root email is routed to my user account. ... postmap filename_without_dot_db ...
    (alt.os.linux)
  • RE: ASP.NET and IIS Security
    ... Make sure that the domain account's "Trust this account to delegate ... an application pool using an account local to the server. ... they get directed from the anonymous site to the Windows authentication site. ... If I access via the hostname I get the ...
    (microsoft.public.dotnet.framework.aspnet)
  • RE: ADMT - WRN1:0198 The name hostname could not be resolved
    ... I understand that you run the workstation migration via batch scripts, ... it fails with the following error: WRN1:0198 The name 'hostname' could not ... account which matches that name. ... Microsoft Online Partner Support ...
    (microsoft.public.windows.server.migration)
  • Only one Exchange profile for inside and outside the LAN
    ... In the settings of an Exchange account in Entourage there are two ... possibilities to enter the Exchange server. ... hostname; the other option is to enter the OWA adress of your account ...
    (microsoft.public.mac.office.entourage)
  • Re: how to send email via postfix
    ... I setup postfix so that root email is routed to my user account. ... I modified aliases to send root's email to bittwister: ... diff aliases_orig aliases ...
    (comp.os.linux.networking)