On 29.07.14 05:09, Mitch (BitBlock) wrote: >I have some older servers - we are in the process of upgrading, but I just > had a wave of what I believe were spam which were being relayed by using > our servers. The messages were presented as dsn (I see the module dsn) - > is there a way to mitigate this kind of attack until I can finish the > migration?
you need to block the spam source, e.g. change password or remove RELAYCLIENT from sending IP's parameters (I do not recommend using RELAYCLIENT for client machines, using STMP authentication is better) >I reset the users password, which didn't help after resetting password, you must kill connected smtpd's - until that the already connected clients can push other mail. > - the only thing that seemed > to mitigate the emails was actually modifying the users email address. > When I did that, the email flow stopped. modified the address? How? -- Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/ Warning: I wish NOT to receive e-mail advertising to this address. Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu. Windows 2000: 640 MB ought to be enough for anybody ------------------------------------------------------------------------------ Infragistics Professional Build stunning WinForms apps today! Reboot your WinForms applications with our WinForms controls. Build a bridge from your legacy apps to the future. http://pubads.g.doubleclick.net/gampad/clk?id=153845071&iu=/4140/ostg.clktrk _______________________________________________ courier-users mailing list courier-users@lists.sourceforge.net Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
