From: Daniel Prieto (prietocse.usf.edu)
Date: Thu Aug 19 2010 - 16:00:35 CDT

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On 8/19/2010 2:33 PM, Brian Evans - Postfix List wrote:
> On 8/19/2010 2:21 PM, Daniel Prieto wrote:
>>
>>
>> On 8/18/2010 4:16 PM, Brian Evans - Postfix List wrote:
>>> On 8/18/2010 3:50 PM, Daniel Prieto wrote:
>>>> Brian,
>>>>
>>>>
>>>> On 8/18/2010 2:17 PM, Brian Evans - Postfix List wrote:
>>>>> On 8/18/2010 2:05 PM, Daniel Prieto wrote:
>>>>>> Hello,
>>>>>>
>>>>>> I have moved from Sendmail to Postfix and eliminated Student email
>>>>>> accounts and kept staff accounts.
>>>>>> I'm using 'virtual_alias_maps" to forward old student email address
>>>>>> to their other new email address that was given to me. When I
>>>>>> send an
>>>>>> email to old stude...
>>>>>> <http://groups.google.com/groups/unlock?hl=en&_done=/group/list.postfix.users/browse_thread/thread/59e45e627b99c294%3Fhl%3Den&msg=82d2317b674054fd>mydomain.com
>>>>>> email address it gets to his new
>>>>>> email address d...
>>>>>> <http://groups.google.com/groups/unlock?hl=en&_done=/group/list.postfix.users/browse_thread/thread/59e45e627b99c294%3Fhl%3Den&msg=82d2317b674054fd>gmail.com.
>>>>>> However, if I use an alias,
>>>>>> "aliastest" (from my NIS) where the stude...
>>>>>> <http://groups.google.com/groups/unlock?hl=en&_done=/group/list.postfix.users/browse_thread/thread/59e45e627b99c294%3Fhl%3Den&msg=82d2317b674054fd>mydomain.com
>>>>>> is part of,
>>>>>> then his email is rejected as "unknown user". I can see from my logs
>>>>>> below that the using "postfix/smtp" gets forwarded and the other one
>>>>>> using "postfix/local" gets rejected.
>>>>>>
>>>>>> Could someone tell me why it's doing that and what I can do to fix
>>>>>> that? Thanks in advance.
>>>>>>
>>>>>
>>>>> Welcome to the list!
>>>>> Unfortunately, you seem to have missed the important welcome message:
>>>>> "TO REPORT A PROBLEM, PLEASE SEE
>>>>> http://www.postfix.org/DEBUG_README.html#mail"
>>>> Sorry, I missed that.
>>>>>
>>>>> Does the *nix account "student1" exist?
>>>> No, it doesn't exist.
>>>
>>> Since "mydomain.com" is listed in mydestination and the user does
>>> not exist, we see the expected behavior.
>>>
>>> You are using virtual_alias_maps which does allows you to send to
>>> your "aliastest" user since it exists as the key.
>>
>> Brian, thanks for helping me out but "aliastest" in not in my
>> virtual_alias_maps "student1" is. "student1" is in the "aliastest"
>> list among other users. What I don't understand is why Postfix see
>> "student1" as unknown user when using "aliastest" even though it's
>> working when sending directly to student1mydomain.com?
>
> My comments came from your logs: " to=<student1mydomain.com>,
> orig_to=<aliastestmydomain>"
> This mail was sent to "aliastestmydomain" and was rewritten to
> "student1mydomain.com".
>
> Maybe you should explain where messages are being stored since you
> said that "student1" doesn't exist and all messages are being sent to
> the local(8) delivery agent. local(8) is responsible to deliver to
> *nix users.

Sorry for the confusion... "student1" is not a local unix user so I
have in my virtual file an entry that redirects emails sent to
"student1mydomain.com" to "student1whateverdomain.com". (this works).
I have "student1mydomain.com" in an "aliastest" list (NIS aliases) and
when an email is sent to "aliastestmydomain.com" that gets the error
returned as unknown user: "stundent1".
After the message is received, virtual_alias_maps are used for rewriting
messages to it's destination by the cleanup(8) daemon.

>>> References:
>>> http://www.postfix.org/ADDRESS_REWRITING_README.html#virtual
>>> http://www.postfix.org/virtual.5.html
>>>
>>> If you don't want bounces sent, then don't have bad addresses
>>> returned from virtual_alias_maps.
>>>
>>> Brian
>>>>> There should be more log data for a transaction.. use the id
>>>>> (93CF2BF107F below) to grep through the log
>>>> Here are the logs related to 93CF2BF107F:
>>>>
>>>> /var/log/maillog:Aug 16 15:03:56 mail postfix/smtpd[31468]:
>>>> 93CF2BF107F: client=localhost.localdomain[127.0.0.1]
>>>> /var/log/maillog:Aug 16 15:03:56 mail postfix/cleanup[31195]:
>>>> 93CF2BF107F:
>>>> message-id=<AANLkTinbh1UBF0MnWmsepCMRP+WYOCBe1enjrx-Ut-r6mail.gmail.com>
>>>>
>>>> /var/log/maillog:Aug 16 15:03:56 mail postfix/qmgr[26402]:
>>>> 93CF2BF107F: from=<dangmail.com>, size=2799, nrcpt=1 (queue active)
>>>> /var/log/maillog:Aug 16 15:03:56 mail postfix/smtp[31783]:
>>>> 380BBBF107E: to=<aliastestmydomain.com>,
>>>> relay=127.0.0.1[127.0.0.1]:10025, delay=0.45, delays=0.09/0/0/0.36,
>>>> dsn=2.0.0, status=sent (250 OK, sent 4C698B9C_12641_34064_1
>>>> 93CF2BF107F)
>>>> /var/log/maillog:Aug 16 15:03:56 mail postfix/local[31602]:
>>>> 93CF2BF107F: to=<student1mydomain.com>,
>>>> orig_to=<aliastestmydomain>, relay=local, delay=0.06,
>>>> delays=0.04/0/0/0.01, dsn=5.1.1, status=bounced (unknown user:
>>>> "student1")
>>>> /var/log/maillog:Aug 16 15:03:56 mail postfix/bounce[31800]:
>>>> 93CF2BF107F: sender non-delivery notification: A2AFBBF1086
>>>> /var/log/maillog:Aug 16 15:03:56 mail postfix/qmgr[26402]:
>>>> 93CF2BF107F: removed
>>>>
>>>> At the bottom of this email is the output of 'postfinger'? Thanks
>>>> for you help...
>>>>>
>>>>>
>>>>>> Aug 16 15:06:52 mail postfix/smtp[31783]: C8324BF107F:
>>>>>> to=<d...
>>>>>> <http://groups.google.com/groups/unlock?hl=en&_done=/group/list.postfix.users/browse_thread/thread/59e45e627b99c294%3Fhl%3Den&msg=82d2317b674054fd>gmail.com>,
>>>>>> orig_to=<stude...
>>>>>> <http://groups.google.com/groups/unlock?hl=en&_done=/group/list.postfix.users/browse_thread/thread/59e45e627b99c294%3Fhl%3Den&msg=82d2317b674054fd>mydomain.com>,
>>>>>>
>>>>>> relay=127.0.0.1[127.0.0.1]:10025, delay=0.43, delays=0.09/0/0/0.34,
>>>>>> dsn=2.0.0, status=sent (250 OK, sent 4C698C4B_12641_34075_1
>>>>>> 2BAB2BF1082)
>>>>>>
>>>>>> Aug 16 15:03:56 mail postfix/local[31602]: 93CF2BF107F:
>>>>>> to=<stude...
>>>>>> <http://groups.google.com/groups/unlock?hl=en&_done=/group/list.postfix.users/browse_thread/thread/59e45e627b99c294%3Fhl%3Den&msg=82d2317b674054fd>mydomain.com>,
>>>>>> orig_to=<aliast...
>>>>>> <http://groups.google.com/groups/unlock?hl=en&_done=/group/list.postfix.users/browse_thread/thread/59e45e627b99c294%3Fhl%3Den&msg=82d2317b674054fd>mydomain.com>,
>>>>>>
>>>>>> relay=local, delay=0.06, delays=0.04/0/0/0.01, dsn=5.1.1,
>>>>>> status=bounced (unknown user: "student1")
>>>>>>
>>>>>> Daniel
>>>>>
>>
>
Daniel

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