@Brian building on what @Simon added, check your firewall stats. Most likely your network has an infected machine causing smtp hits. Goto mx tool site, check your server for open relay and port number. On your firewall, check out the traffic hits on the port out and which machine. Disconnect this machine/s, check your net stats again and start to slow the outbound traffic by adding the smtp protocol to a managed bandwidth. Whitelisting takes atleast 24 hours, so consider a redundant smtp for future use. HTHs. On Fri, Apr 16, 2010 at 2:06 PM, Simon Mbuthia <simon.mbuthia@gmail.com> wrote:
Hey Brian,
You either have a spambot in your network that's using your mail server to send out spam or your server is on open-relay [relaying messages from other domains but yours]. I had the same problem last year, that's when I learnt such terms 'toka watu hapa hapa skunkworks :) Find out what the problem is, fix it and get your mail server whitelisted.
On 16 April 2010 13:24, Brian Mang'oli <brayous@gmail.com> wrote: