I'm using the smtp-server of my provider (smtp.wanadoo.nl), which doesn't require SMTP auth, to send the message. I have this problem also with other providers.

Yes I use iRedMail as the receiving mailserver. So the mail route is:

my computer -> my providers SMTP -> iRedMail server

my providers SMTP can't deliver the e-mail to the iRedMail server, because it is reject with the message:
<user@domain2.nl>: host mail.domain.nl[xx.xx.xx.xx] said: 553 5.7.1
    <user@domain.nl>: Sender address rejected: not logged in (in reply to RCPT TO command)

In the log of the mail server it says:
Aug 13 10:45:16 democritus postfix/smtpd[22542]: NOQUEUE: reject: RCPT from unknown[130.161.131.5]: 553 5.7.1 <info@contentpower.nl>: Sender address rejected: not logged in; from=<user@domain.nl> to=<user@domain2.nl> proto=ESMTP helo=<mailservice.tudelft.nl>

I added the ip-address of my own mailserver:

mynetworks = 127.0.0.1/8, xx.xx.xx.xx

xx.xx.xx.xx = external ip-address of mailserver

Thanks for the help!

I tested it myself successfully and haven't received any comments from other users. So it seems to be fixed.

i had the same problem. the antispam server in my enviroment keeps getting message that says iredmail server thinks that other domain could not be found although i had successfully ran "host -t mx mydomain.com" if i'm sending from mydomain.com

I keep running into the described problem. I am using IRedMail running in an Ezjail on a Freebsd 8 hosting about 50 different domain names.

I get the following error when users are sending mail to users of the same domain (= Internal mail). Sending to external domains is not a problem.

<[recipient]@xxx.nl>: host mx.xxx.nl[xxx.xxx.xxx.xx] said: 553 5.7.1  
<[sender]@xxx.nl>: Sender address rejected: not logged in (in reply to RCPT TO command)
Reporting-MTA: dns; xxx01.xxxxx.net X-Postfix-Queue-ID: xxxxxx X-Postfix-Sender: rfc822;
 [sender]@xxx.nl Arrival-Date: Mon, 4 Apr 2011 15:36:56 +0200 (CEST) Final-Recipient: rfc822;
 [recipient]@xxx.nl Original-Recipient: rfc822;[recipient]@xxx.nl Action: failed Status: 
5.7.1 Remote-MTA: dns; mx.xxx.nl Diagnostic-Code: smtp; 553 5.7.1 : Sender address rejected: not logged in

I could solve this error by adding the reporting MTA (ex. xxx01.xxxxx.net) in mynetworks in main.cf of Postfix. But this does mean that I have to add all the possible MTA's my customers are using worldwide. This is impossible to do. I need to relax the rule that INTERNAL mail of the domains I am hosting, can only come from mail-servers which ip-numbers are listed in mynetworks.

Can you help me with this?

I have the same problem. If i send an email from one account to another on the same iredmail server, using an external smtp server with no auth protocol, i receive the message "Sender address rejected: not logged in".

It works replacing "reject_sender_login_mismatch" with "reject_authenticated_sender_login_mismatch" in smtpd_sender_restrictions, but i can't check the owner of email from the "MAIL FROM" address.

On the other hand, disabling the SMTP service in the advanced tab of iRedAdmin-Pro for a specific address, that address is able to send email to other account on the same server using an external smtp server, but this is not the best solution for all my customers.

I hope you can suggest better solutions.

Maybe you need reject_unauthenticated_sender_login_mismatch?

Reference:
- http://www.postfix.org/postconf.5.html# … n_mismatch
- http://www.postfix.org/postconf.5.html# … n_mismatch

Hopefully this may help clear up what is happening.

1 - I got the same error messages - see below.
 

    ----- The following addresses had permanent fatal errors -----
               <receiver@example.com>
               (reason: 553 5.7.1 <sender@mydomain.com>: Sender address rejected: not logged in)

2 - I am in the process of migrating mydomain.com from my previous ISP to my iRed system.
3 - The SMTP server settings on my email client are smtp.myCurrentISP.com
4 - Both Receiver@example.com and  mydomain.com are registered in my iRed mail system.

The problem comes down to this: Even though I am sending my email using my old isp when the email gets to my iRed mail system the iRed mail system recognises that both receiver and sender are registered in the ired mail system .
The iRed mail system recognises that the sender ( sender@mydomain.com)  is not logged into iRed mail and so without checking to see if the sending smtp is iRed mail or an external isp ( smtp.myCurrentISP.com) rejects the mail.

Technically this is a glitch in iRed mail. iRed mail should not check the sender is logged in if the sender is using an external smtp service.

Practically - clients of an iRed mail system should probably use the iRed mail systems smtp rather than third party senders (e.g. if I change my mail clients smtp settings to smtp.mydomain.com , the ired mails smtp address then the problem goes away).

Where this would not work is if I am using an ISP that blocks outgoing port 25 / 465 / 587 and forces me to go through their smtp when using them as an ISP. In my country we have ISP's that do block outgoing port 25, 465 and 587 unless you explicitly ask for an exemption - and that exemption only works if you have a static ip address, not a casual ADSL with changing IP address.

A suggested flow is shown here: