On Friday 26 June 2015 17.40.04 Ted Mittelstaedt wrote:
But, putting RBL checks into the MTA is the best way I know to piss off
your users since tag-and-forward is not an option on MTA rbl checking.
That's why we all do our RBL checks in spamassassin.
On 27.06.15 10:18, Martin S wrote:
Could you elaborate on this? I'm "new" to running a mail server (it's in test
phase atm) as my only experience is with sendmail many years ago. I take it SA
does RBL look-ups by default and there is no need to att RBL look-ups in
postfix main.cf file?
The MTA can use RBLs and refuse the mail based on connecting IP listd in
RBL, without the need to receive mail itself, but Ted is argiung against
this (so are many others).
There are other possibilities - you can check HELO string, connecting IP,
DNS, multiple RBLs etc - all without receving the mail, before the DATA
phase, when SA can't be used (SA needs the mail).
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