spam forwarding not working

[Drew Marshall]

On 11 Oct 2006, at 01:35, Nigel Kendrick wrote:

>
>
> -----Original Message-----
> From: mailscanner-bounces at lists.mailscanner.info
> [mailto:mailscanner-bounces at lists.mailscanner.info] On Behalf Of  
> Glenn Steen
> Sent: Tuesday, October 10, 2006 10:32 AM
> To: MailScanner discussion
> Subject: Re: spam forwarding not working
>
> On 10/10/06, Nigel Kendrick <support-lists at petdoctors.co.uk> wrote:
>> Hi guys,
>>
>> I have setup a spam mailbox on our local mail server that users can
>> submit their unwanted stuff to - it's called 'spam@[snipped]'
>>
>> The 'spam' mailbox is submitted to spamassassin every night via a  
>> cron
> job.
>> This works with no problems for mail that people manually forward,  
>> but
>> I also have this line in MailScanner.conf:
>>
>> High Scoring Spam Actions = delete forward spam@[snipped]
>>
>> Unfortunately, this triggers the following emails to me (at root):
>>
>> ++++++++++
>>
>> This is the Postfix program at ...
>>
>> I'm sorry to have to inform you that your message could not be
>> delivered to one or more recipients. It's attached below.
>>
>> [Snip]
>>
>> <spam@[snipped]>: User unknown in virtual alias table
>>
>> ++++++++++
>>
>> I have also tried local delivery by putting the forward address as
>> 'spam at servername' - am I hitting problems because spam is being
>> resubmitted to MailScanner before being forwarded, but even then  
>> why a
> 'user unknown'
>> message?
>>
>> MailScanner is 4.55.10, PostFix is 2:2.2.10-1.RHEL4.2 on CentOS 4.4
>>
>> Thanks
>>
>> Nigel Kendrick
>>
>>
> Nigel,
>
> Virtual aliases are expanded _after_ MailScanner, so you cannot use a
> virtual alias in a rule like that (for addressing).
> Simply change it to the real address and things should work out OK:-).
>
>
>
> Sorry Glen - me being thick here - all our addresses are setup in a  
> virtual
> alias list so what constitutes a 'real address' in this respect.

In this instance i would suggest you need to forward the spam to  
spam@<host>.[snipped] which makes it local. Make sure you have listed  
your host name in main.cf under myhostname and list $myhostname under  
mydestination. If you have multiple servers using a central database  
(Such as MySQL) you can play other tricks using NFS mounts and  
localhost but that's for another 'lesson' :-)

Drew