Re: Sender address rejected when sending messages to an address that are forwarded back to my server

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Sender address rejected when sending messages t...
\ Cengiz Vural (15 Nov 2007)
. \ Noel Jones (15 Nov 2007)
. . \ Cengiz Vural (16 Nov 2007)
. . . \ Noel Jones (16 Nov 2007)
. . . . \ Cengiz Vural (19 Nov 2007)
. . . . . \ Noel Jones (19 Nov 2007)
. . . . . \ mouss (19 Nov 2007)

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Subject:	Re: Sender address rejected when sending messages to an address that are forwarded back to my server
Group:	Postfix-users
From:	mouss
Date:	19 Nov 2007

Cengiz Vural wrote:
>
> On Nov 16, 2007, at 9:19 AM, Noel Jones wrote:
>
>> Cengiz Vural wrote:
>>> On Nov 15, 2007, at 1:33 PM, Noel Jones wrote:
>>>> Cengiz Vural wrote:
>>> Nov 15 15:52:58 mail postfix/smtpd[5598]: NOQUEUE: reject: RCPT from
>>> ironman.mail.utexas.edu[128.83.32.51]: 553 5.7.1
>>> <_user <mailto:vuralc>>: Sender address
>>> rejected: not logged in; from=<_user
>>> <mailto:vuralc>> to=<_user
>>> <mailto:vuralc>> proto=ESMTP
>>> helo=<ironman.mail.utexas.edu>
>>
>> You've specified reject_sender_login_mismatch in your main.cf, and the
>> mail claims to be from a local user that is not logged in. So postfix
>> rejects the mail.
>
> What does that have anything to do with reject_sender_login_mismatch?
> Nobody is trying to send an email without login in! An email is being
> forwarded from @mail2.edu to @mail1.edu.

To be forwarded, a message must be sent.

>Why would a forwarding server need to login?

postfix does what you configure it to do. if you require login for
senders (via reject_sender_login_mismatch or so), it will require it. if
you don't, it won't.

For more help, please show complete complete output of 'postconf -n'.

>>
>> Maybe you need to whitelist 128.83.32.51 or stop using
>> reject_sender_login_mismatch, depending on what you want to accomplish.
>
> You are not seriously suggesting that I should whitelist every email
> server that my users may forward from!
>

remove reject_sender_login_mismatch. if your goal is to enforce this for
inbound mail only, then use a check_client_access to return the check
only for your networks. better yet, setup a submission service (port
587) and use it for mail submission. This may or may not be simple,
depending on the size and skills of your user base...