[CentOS] Sendmail SMTP Brute-Force Attack

Fri Jun 15 16:37:41 UTC 2012
Shiv. Nath <prabhpal at digital-infotech.net>

On 6/15/12 2:03 AM, Les Mikesell wrote:
> On Thu, Jun 14, 2012 at 7:58 PM, Gustavo Lacoste<gustavo at lacosox.org>  wrote:
>> The problem with my server is: I use it to offer webhosting services. Some
>> customers using Outlook are blocked because they use black listed ips (ips
>> simply are dynamic).
> Give them logins/passwords and only rely if the connection is authenticated.

The solution Les Mikesell offered is also good option, use sasldb 
function to authenticate before relay.

Thanks / Regards