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From: Gary Smith on 5 May 2010 17:57
I have a content filter in which I need the sasl_username. This works for most of our outgoing email. The problem is sometimes locally generated email is submitted without SASL (as they are in the mynetworks table). This leaves sasl_username blank. So to get around this I have wrapped ${sasl_username} in [] and in my scripts I check if "$4 == "[]". If I don't wrap it in something it ordinal position of the arguments change which breaks the script. When the script is completed, I replace $4 with -- and submit back to queue.

master.cf
tempsa unix - n n - 32 pipe
-o content_filter=
flags=Rq user=filter argv=/etc/postfix/scripts/tempsa.sh -f ${sender} [${sasl_username}] ${recipient}

I was wondering if there is a better way to do this when we need to pass this type of argument to a content filter?

Gary-

From: Noel Jones on 5 May 2010 18:08
On 5/5/2010 4:57 PM, Gary Smith wrote:
> I have a content filter in which I need the sasl_username. This works for most of our outgoing email. The problem is sometimes locally generated email is submitted without SASL (as they are in the mynetworks table). This leaves sasl_username blank. So to get around this I have wrapped ${sasl_username} in [] and in my scripts I check if "$4 == "[]". If I don't wrap it in something it ordinal position of the arguments change which breaks the script. When the script is completed, I replace $4 with -- and submit back to queue.
>
> master.cf
> tempsa unix - n n - 32 pipe
> -o content_filter=
> flags=Rq user=filter argv=/etc/postfix/scripts/tempsa.sh -f ${sender} [${sasl_username}] ${recipient}
>
> I was wondering if there is a better way to do this when we need to pass this type of argument to a content filter?
>
> Gary-

one options is:

... ${sasl_username:unknown} ${recipient}

ie. if $sasl_username is empty, substitute "unknown"

But nothing particularly wrong with what you're doing already.


-- Noel Jones

From: Gary Smith on 5 May 2010 18:10
> ... ${sasl_username:unknown} ${recipient}
>
> ie. if $sasl_username is empty, substitute "unknown"
>
> But nothing particularly wrong with what you're doing already.

That will work better for me since I won't have to parse out the sasl_username from the [] if it's empty. I can just check for the unknown value.

Thanks

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