Re: [exim] use of add_header - not an *exact* drop-in replac…

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Author: Eli
Date:  
To: exim users
Subject: Re: [exim] use of add_header - not an *exact* drop-in replacement formessage?
W B Hacker wrote:
> Thank you Eli!
>
> Just saved me a ton of grief.... (1700 line configure file... *many*
> legacy
> 'message = ..' used where add_header could/should be..


No prob!

Though, I have now stumbled upon a possible drawback in the way add_header
works. I decided that since I was rewriting some of my ACL lines to work
(and make more sense in the flow of reading), that I'd rewrite the rest of
them too... until I stumbled upon this one:

deny message         = You must be authenticated to send from 
<${sender_address}>
     set acl_m10     = ${sender_address_domain}
     sender_domains  = +domain_virtual : +domain_aliases
     set acl_m10     =
     !authenticated  = *


I looked at it for a second and realized why I was setting acl_m10 twice,
and specifically in the order everything appears:

domainlist  domain_virtual      = ${lookup mysql {SELECT `host` FROM 
`domain` WHERE `host` = '${quote_mysql:${if def:acl_m10 
{$acl_m10}{$domain}}}' LIMIT 1}}
domainlist  domain_aliases      = ${lookup mysql {SELECT `alias` FROM 
`domain_aliases` WHERE `alias` = '${quote_mysql:${if def:acl_m10 
{$acl_m10}{$domain}}}'
 LIMIT 1}}


A pretty little hack, quite possibly "stolen" from someone else on the list
to help me overcome $domain issues. Of course, if I try to move the message
line around I suppose I could end up with:

deny !authenticated  = *
     set acl_m10     = ${sender_address_domain}
     sender_domains  = +domain_virtual : +domain_aliases
     set acl_m10     =
     message         = You must be authenticated to send from 
<${sender_address}>


Or if I didn't have the authenticated restriction, I suppose I could even
start it off on the "set acl_m10 = ..." line, but perhaps there might be an
ACL that someone has where it's just not possible to rewrite it in such a
way that would work with the way add_header functions?

I dunno - my personal opinion is that I'd prefer to have add_header function
*just* like message did *IF* the point to using add_header is to ultimately
abolish the use of "warn message = ...". However, if the actual intended
use of add_header is to allow the unconditional addition of a header to a
message, then perhaps calling "warn message = ..." depreciated behaviour
should be revoked, and both methods kept for the future.

Comments?