I was looking into doing some tarpit testing and i was wondering if the
implementation of tarpitting built into postfix acts the same way as
"spamd" handles it.
i read a summary for spamd and then read what the postfix configurations
did and it doesn't sound like they do the same thing but they're both
called tarpitting.
As far as i understand spamd actually holds the connection open while
postfix just stops responding to concurrent connections for a certain
amount of time?
Was wondering if someone could correct me on this.
These are the summaries i'm reading.
spamd:
Spamd will decreases the TCP window length to one to slow the connection
down to one byte per second and will not let the connection go.
Postfix:
When a remote SMTP client makes errors, the Postfix SMTP server can
insert delays before responding. This can help to slow down run-away
software.
As a last note.
Is there anyway to automatically set a postfix mta to automatically
tarpit all incoming mail to a set time?
like set smtpd_soft_error_limit=0
maybe that works, i dunno cause i haven't tried yet.
Thanks,
James
