Udo Rader schrieb:
neugi schrieb:
Hi,

i want to use RBL Blocking with postfix. but i've got a small i've many users that work with mobile internet (UMTS Modem from T-Mobile) and often they are listed and users are complaining that they cannot send emails out.

my question is now. can i restrict rbl only to incoming mails or is there a list that will not list mobile users form t-Mobile?

use SASL to make users authenticate to your server (SMTP authentication) and give sasl authenticated connections precendece like this:

smtpd_client_restrictions =
   permit_mynetworks,
   permit_sasl_authenticated,
   reject_rbl_client your.rbl.list,
   [...]

sorry, this should read

smtpd_recipient_restrictions =
   permit_mynetworks,
   permit_sasl_authenticated,
   reject_rbl_client your.rbl.list,
   [...]

--
Udo Rader
http://www.bestsolution.at

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