Any chance to get a config for MILTER_CHUNK_SIZE? It would be great so
have an easy and fast switch. I may have different settings on different
mail systems (because of 3rd party milters), its hard to manage
different customized postfix versions in my distribution repositories.
Thanks,
Matthias Schneider
Am 16.08.19 um 15:32 schrieb Matthias Schneider:
Any chance to get a config for MILTER_CHUNK_SIZE? It would be great so
have an easy and fast switch. I may have different settings on
different mail systems (because of 3rd party milters), its hard to
manage different customized postfix versions in my distribution
repositories.
Thanks,
Matthias Schneider
Am 16.08.19 um 14:49 schrieb Viktor Dukhovni:
On Aug 16, 2019, at 10:33 PM, Matthias Schneider
<matthias.schnei...@rmail.de> wrote:
I was wondering why the transfer of a 100mb mail to my milter
application was slow, i found the bottleneck in the body chunk
transfer.
The maximum packet length seems to be fixed to 64k, it would be
great if we could make that configurable in postfix (uint32 is
possible).
* milter communication fails if a single header is larger than 64K.
If a single header is larger than 64KB (which is not possible in the
default configuration) then it cannot be transferred in one block to
libmilter and hence the communication fails. This can be avoided by
increasing the constant MILTER_CHUNK_SIZE in
include/libmilter/mfdef.h and recompiling sendmail, libmilter, and
all (statically linked) milters (or by using undocumented compile
time options: _FFR_MAXDATASIZE/_FFR_MDS_NEGOTIATE; you have to
read the source code in order to use these properly).
