Zitat von Justin Kim <justin.kim AT mezine DOT com>:
Justin Kim:
> > > by 3000 messages and plus then my server is not coping well. I
> > have amavisd
> > > running too but I didn't have any problem until today for about
> > 6 months.
> > > Does anyone can give me a hand to manage that queues? or
> > incoming traffic?
> > >
> > > Thank you in advance,
> >
> > Do you have lots of MAILER-DAEMON mssages trying to go to the network?
> >
> > Do you have lots of from=<> arriving from the network?
> >
> > Wietse
> >
>
> Yes I see a lot of MAILER-DEAMON messages
> And I have a cron job setup to clear that MAILER-DEAMON
messages because I
> thought those messages will be sropped anyways. I might be
wrong please help
> me more.
Use your favorite search engine for: recipient address validation.
See also:
http://www.postfix.org/BACKSCATTER_README.html
http://www.postfix.org/postconf.5.html#relay_recipient_maps
http://www.postfix.org/postconf.5.html#local_recipient_maps
Wietse
Thank you,
If I want to implement this prevention method (dictionary attack
prevention), then how can I do it?
I understood the concept but I still don't know how to implement it.
Please help.
Justin.
First implement recipient verification! Where are your valid e-mail
addresses defined?
- Local with /etc/passwd and /etc/aliases?
- Virtual with LDAP or some other form of database?
- Is this machine a relay for some backend mailstore?
Show your "postconf -n" output and some log entries from a connection
with a invalid e-mail address.
Regards
Andreas
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