Dan,
> I've got a client that wants to take in some large mail but quarantine
> it, due to the industry they are in. We used to have MailScanner doing
> this, but since switching over to postfix + amavis we have lost that
> capability. Anyone have an idea on how to have amavis quarantine files
> over a certain size limit? Ideally, Postfix takes in messages up to
> 50MB, but anything greater than 10MB would be quarantined for review.
Possible. Some details were fixed at 2.4.3-rc1 (to be -rc2 in a day or two,
and then released), but the concept was there even before (but did not
work as expected, large mail was rejected despite different setting in
final_destiny).
@message_size_limit_maps = ({
'[EMAIL PROTECTED]' => 1000000,
'[EMAIL PROTECTED]' => 5000000,
'.' => 10*1024*1024,
});
$final_destiny_by_ccat{+CC_OVERSIZED} = D_DISCARD;
$quarantine_method_by_ccat{+CC_OVERSIZED} = 'local:big/%m';
It is also possible to pass such large messages,
but redirect them by appending an address extension, e.g.:
$addr_extension_maps_by_ccat{+CC_OVERSIZED} = ['oversized'];
and using MTA aliases to specify a final location.
>From 2.4.3 release notes:
- bug fix: don't reject mail when mail size restriction is in force,
the limit is exceeded, and $final_destiny_by_ccat{+CC_OVERSIZED}
is not D_REJECT;
- added global configuration variable $sql_quarantine_chunksize_max,
which determines a maximum size (in bytes) for data written to a field
'quarantine.mail_text' when quarantining to SQL. Must not exceed size
allowed for a data type on a given SQL server. It also determines a
buffer size in amavisd. Too large a value may exceed process virtual
memory limits or just waste memory, too small a value splits large
mail into too many chunks, which may be less efficient to process;
defaults to 16384;
Mark
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