Re: Cannot send e-mails from any e-mail clients

11 msg	SMTP authentication with saslauthd against PAM
7 msg	Error in SMTP sequence
2 msg	dkim-milter on relay server unknown-jobid exter...
11 msg	Stubborn Cert issue
3 msg	Problems with false positives
4 msg	reject_unverified_recipient case sensitive?
3 msg	dkim=fail (verification error: invalid key gran...
5 msg	? Using header checks on (Postini) X-pstn-levels
2 msg	Can't find error in my config file. Can you?
1 msg	chroot postgresql ssl problem
15 msg	What cert to buy
3 msg	Address re-writing
9 msg	Mail Rejected when we relay for a client.
8 msg	Queueing up archive messages

Cannot send e-mails from any e-mail clients
\ Ismet Togay (11 Apr 2007)
. \ Noel Jones (11 Apr 2007)

1 msg	Re: outbound mail failure - need to fix asap -S...
4 msg	outbound mail failure - need to fix asap
3 msg	Postfix alias problem
2 msg	problem to send a mail to a command in aliases
3 msg	smtpd_auth

Subject:	Re: Cannot send e-mails from any e-mail clients
Group:	Postfix-users
From:	Noel Jones
Date:	11 Apr 2007

At 11:13 AM 4/11/2007, Ismet Togay wrote:
>Hello,
>
>This is my first message to the list! Nice to meet you :)
>
>I have a problem about Postfix:
>
>I manage my VPS using the Webmin control panel. I installed Postfix and
>Dovecot IMAP/POP3 Server. Everthing seems to be working fine. I can send and
>receive e-mails using the webmin. I can also receive the e-mails from an
>e-mail client, like Outlook Express. But the problem is, "I cannot send
>e-mails from any e-mail clients".
>
>For instance, the error message Outlook Express gives is the following:
>"The message could not be sent because one of the recipients was rejected by
>the server. The rejected e-mail address was 'ismet'. Subject
>'qweasd', Account: 'mail.mydomain2.net', Server: 'mail.mydomain2.net',
>Protocol: SMTP, Server Response: '554 5.7.1 <ismet>: Relay
>access denied', Port: 26, Secure(SSL): No, Server Error: 554, Error Number:
>0x800CCC79"

We like to see what is in the system maillog and the output of
"postconf -n". This was described in the list welcome message and is
also available here:
http://www.postfix.org/DEBUG_README.html#mail

>I have searched for this error on the Internet. Most of the suggestions are
>about checking/enabling "My server requires authentication" option in the
>outgoing mail server configuration. But, in my Outlook Express, that option
>has been already selected. So, the problem should not be related with that.

"relay access denied" means that your PC is not listed in mynetworks,
or has not authenticated.
If your PC is on a static IP, the easiest solution is to add that IP
to the mynetworks setting. If you do not have a static IP, your PC
will need to authenticate to postfix.

It doesn't appear that your postfix is configured to offer
authentication. Please see:
http://www.postfix.org/SASL_README.html#build_dovecot
http://www.postfix.org/SASL_README.html#server_dovecot

You also might want to pick up the excellent Book of Postfix at your
favorite bookstore.
http://www.postfix-book.com/

--
Noel Jones