On Apr 16, 2012, at 14:20, lst_ho...@kwsoft.de wrote: >>>> Dear Postfix Jedi, >>>> >>>> I need your help to secure a new postfix server against the SPAM flooding. >>>> >>>> Currently I have an old postfix based on an old debian server and since >>>> some days, my server is subject to the SPAM flooding (+- 50k mails/hours). >>> >>> How many of these 50K are entering the queue? >> yes, in fact, all :( and now, I can't send an email to gmail or hotmail for >> my customers. > > This sounds like your server is sending out (relaying) this crap?? > > This is by far a more serious issue and you should immediately shut-down your > mailserver and check why the spam could enter the queue to get relayed. Using > RBLs does not harden your server against open-relay/hacking abuse.
If this is a business server you are responsible for, I would suggest you do the above, and seek assistance to help you with the cleanup, and the upgrade. This would give you a decent base to start from and learn more about Postfix, without the pressure of the current problem. Cya, Jona
