On Fri, 14 Jan 2005, Sheldon Hearn wrote:
> Hi folks,
Hello Sheldon, you've been very quiet lately... :-)
> Apparently, if I enable batching (batch_size = 10) on my UUCP transport
> (pipe driver), headers_add and headers_remove seem to be ignored?
That would be really bad. There shouldn't be any connection.
> This seems unlikely to me. I'd think that adding and removing headers,
> if and only if it made a recipient's copy different from everyone
> else's, would simply exclude that recipient from the batch. Is that
> correct?
Yes. Here is a comment from the code:
/* Until we reach the batch_max limit, pick off addresses which have the
same characteristics. These are:
same transport
same local part if the transport's configuration contains $local_part
same domain if the transport's configuration contains $domain
same errors address
same additional headers
same headers to be removed
same uid/gid for running the transport
same first host if a host list is set
*/
> If so, then my headers_add and headers_remove (which are complicated)
> aren't being ignored and I'm just making one too many assumptions.
It may be that its definition of "same" is getting confused by your
complicated settings, of course. For remove_headers, it checks the
literal strings. So I guess it would treat
headers_remove = a:b
headers_remove = b:a
as different. In the case of headers_add, it does something similar, but
there may be a chain of additions (from multiple routers).
--
Philip Hazel University of Cambridge Computing Service,
ph10@??? Cambridge, England. Phone: +44 1223 334714.
Get the Exim 4 book: http://www.uit.co.uk/exim-book
