mail server problem(postfix)

[Alexander Dalloz]

Am So, den 12.06.2005 schrieb Ankush Grover um 16:25:

>  My  Mail Server is configured on FC3
> (Postfix+Dovecot+Clamav+Fetchmail).I am facing one problem few of the 
> mails from my domain are getting rejected.
> 
> For example if any user from my domain is sending the mail to a user
> on rediffmail.com domain that mail is getting rejected.
> 
> My Scenario is such we have one catchall with the ISP i download all
> the mails from the ISP mailbox through fetchmali.For sending the mails
> the local mail server with postfix running on it.The postfix  is
> configured to authenticate with the ISP mail server before sending the
> mails.
> 
> If the authentication is properly configured then why the mails are
> getting rejected see below
> 
> ankush1711 at rediffmail.com>: host mail2.rediffmail.com[203.199.83.4] said: 553
>     Message from xx.xx.xx.xx( Public Ipaddress of my company)  rejected - see
>     http://spamblock.outblaze.com/xx.xx.xx.xx (in reply to RCPT TO command)

You are not sending through your ISP's smart host.

> How to stop my mail server to become a part of Spam World. I want to 
> test that my local mail server is getting authenticated with the ISP
> mail server.Sasl_finger is a tool that I know shows some statistics
> regarding this but it does not itself checks by sending a mail.Is
> there any other tool for checking the authentication with the ISP .

Check your mail log file.

> We have one Public IPaddress ,NAT is configured on the ADSL Router to
> give all the users in the LAN access to the Internet.
> 
> In postfix/main.cf the entries for authentication as below:
> 
> smtp_sasl_auth_enable = yes
> smtp_sasl_password_maps = hash:/etc/postfix/passwd

I would better name the password map file "sasl_passwd".

> smtp_sasl_security_options = noanonymous
> 
> I have not configured TLS/SSL for postfix.

You should avoid sending AUTH information unencrypted through the net.

> The entries for passwd file are as 
> 
> ISP mailserver            username:password.

Did you set "relayhost" in main.cf?

> Ankush

Alexander


-- 
Alexander Dalloz | Enger, Germany | GPG http://pgp.mit.edu 0xB366A773
legal statement: http://www.uni-x.org/legal.html
Fedora Core 2 GNU/Linux on Athlon with kernel 2.6.11-1.27_FC2smp 
Serendipity 16:49:26 up 19 days, 15:27, load average: 0.23, 0.12, 0.10 
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 189 bytes
Desc: Dies ist ein digital signierter Nachrichtenteil
URL: <http://listman.redhat.com/archives/fedora-list/attachments/20050612/4d3832f9/attachment-0001.sig>