Re: Need advise on ISP postfix mail server

2010-08-16 Thread brian moore
On Fri, 13 Aug 2010 11:46:53 +0700 Makara wrote: > Puthick, no authentication require for sending mail out because of > users knowledge limitation. We would like to solve the problem without > implement smtp authentication. use one of the pop-before-smtp packages. It's admittedly a kludge, but

Re: Need advise on ISP postfix mail server

2010-08-12 Thread Makara
Puthick, no authentication require for sending mail out because of users knowledge limitation. We would like to solve the problem without implement smtp authentication. On Fri, Aug 13, 2010 at 11:43 AM, Puthick Hok wrote: > Do you authenticate your customers before accepting their emails for >

Re: Need advise on ISP postfix mail server

2010-08-12 Thread Puthick Hok
Do you authenticate your customers before accepting their emails for sending? If you do this, it should stop virus infected computers from sending emails through your server. Puthick Makara wrote: Dear All, We are running postfix mail server and open relay for our clients to send mail out.

Re: Need advise on ISP postfix mail server

2010-08-12 Thread Sahil Tandon
On Fri, 2010-08-13 at 11:30:10 +0700, Makara wrote: > How to limit number of mail send in postfix / second for each > customers? Limits per second seem draconian, but do what you have to do. You will need a policy service: http://www.postfix.org/SMTPD_POLICY_README.html -- Sahil Tandon

Need advise on ISP postfix mail server

2010-08-12 Thread Makara
Dear All, We are running postfix mail server and open relay for our clients to send mail out. We use amavisd-new and spamassassin to filter spam mails before allow to send it out. In some case the messages are spam but spamassassin can not detect that so our clients spread the spam mails to the i