[CentOS] Sendmail SMTP Brute-Force Attack

Fri Jun 15 02:03:40 UTC 2012
Les Mikesell <lesmikesell at gmail.com>

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.

    Les Mikesell
      lesmikesell at gmail.com