Hi Kebba, The stock Exim4U config is not setup to scan outgoing mail for spam. However, you could modify Exim4U's exim configuration file (/etc/exim/exim.conf) to scan outgoing mail by modifying the ACLs to remove the appropriate accept statements prior to the various spam checks. For example, to have all authenticated mail go through all of the same spam checks as incoming mail, try commenting out the following statement from the beginning of all of the ACLs: accept authenticated = * Obviously, you would need to thoroughly test any modifications such as this. It sounds like you are interested in setting up Exim4U as a relay host and then to have it do spam checks. This can also be done but you would need to modify the ACLs in the exim configuration file to accept mail from the relaying server but to then do the spam checks. As an aside, Exim4U does have the ability to ratelimit outgoing mail from internal accounts' to prevent abuse. This is done in the file: /etc/exim/exim4u_local_rl.conf.inc. The ratelimiting done by this file using the stock Exim4U configuration is very conservative so as to not disrupt any legitimate senders, however, this file is fairly well self documented and you can modify the ratelimiting parameters in this file to be more aggressive to match your needs. FYI, Gordon On 02/07/2011 12:58 PM, kebba.foon(a)qcell.gm wrote:

Dear List,

our network administrator are having issues with smtp traffice (we are an ISP) most of our customer's IP are sending spam, this is giving a bad reputation on our IP's on the rbl's. they are suggesting that all smtp traffic from our customers be forwarded to our mail server and the the server will check for malform mails, scan the mails and then further forward them to their destination. my question is:

1. those exim4u scan outgoing mails 2. is it a good idea to go about this setup? 3. is there any other best solutions.

Thanks Kebba

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