[imp] Memory usage in new IMP

[lst_hoe01@kwsoft.de]

Zitat von Ross Becker <ross at rbecker.org>:

> Hiyas folks,
>     I've been running IMP 3.2.1 for about a year now, and this week we
> had an issue with users being unable to send attachments.  The
> underlying problem turned out to be related to amavisd/clamav, but in
> the process of tracking this down, we discovered some problems with IMP;
> turns out that if a message had even a 2 megabyte attachment, when it
> was saved in the "sent" folder, the attachment would be silently
> missing.  I tracked this down to be PHP running out of memory when
> copying the message to the sent folder. The configured memory limit of
> PHP on this machine was 16 megabytes.
>
> Can anyone tell me if IMP 4.x has improved memory use in situations like
> this?  It doesnt seem to me that a 2 megabyte attachment ought to run
> PHP out of memory at 16 meg process limit.

16M is way too low. Be aware that this limit is for the whole script 
which means
all the Horde/IMP code, the mime encoded message and much more.
We use a 64MB limit with 6MByte max. attachment size. This is enough to 
save us
from trouble. If you are low on memory limit the number of processes for the
webserver.

Regards

Andreas