Üç adımlık basit bir iş.

1- cd /etc/postfix
vi blacklist_postfix

örnek bir liste.
besttanitim2@mynet.com REJECT
dijitalimaj@emarketingtm-01.com REJECT
dijitalimaj@emarketingtm-02.com REJECT
dijitalimaj@emarketingtm-03.com REJECT
dijitalimaj@emarketingtm-04.com REJECT
dijitalimaj@emarketingtm-05.com REJECT
dijitalimaj@emarketingtm-06.com REJECT
dijitalimaj@emarketingtm-07.com REJECT
dijitalimaj@emarketingtm-08.com REJECT
dijitalimaj@emarketingtm-09.com REJECT
dijitalimaj@emarketingtm-10.com REJECT
garantim8@gmail.com REJECT
ilhan@karacay.nl REJECT
imesegitim@ymail.com REJECT
info@binbirsepet.com REJECT
info@ingilizceogretenset.com REJECT
info@kamerali-kolsaati.com REJECT
info@mailmeka.info REJECT
konusma_cd_egitim@aol.com REJECT
mailbultenservis1@gmail.com REJECT
mailbultenservis2@gmail.com REJECT
mailbultenservis3@gmail.com REJECT
mailreklamhizmeti@gmail.com REJECT
nrt131226@gmail.com REJECT
paravoce@cookeletroraro.com.br REJECT
snn_yonetim@yahoo.com.tr REJECT
sosyalmedyareklamcilik@hotmail.com REJECT
sosyalmedyareklamcilik@hotmail.com.tr REJECT
tanitim_rehber_cd_87@msn.com REJECT
tanitim_rehber_cd_88@msn.com REJECT
urun_seckin_524@yahoo.com REJECT
duyuru@adramismail.com REJECT

2- postmap blacklist_postfix
3- service postfix reload