oh penerima ya bukan di email server bapak...saya pikir di postfix bapak
yang mengaktifin Address verification, mungkin masalah ini bapak bisa cek
dari sisi dns server bapak ..mungkin bisa bapak tanyakan ke  yang
bersangkutan,   apakah cuma dari mail server bapak aja yang di bounce....
apa di server sana bisa di buat whitelist... karena di konfigurasi saya
jika ada report  bouncing email baik itu dari sisi RBL atau lainnya
langsung saya masukan whitelist

kalo di konfigurasi saya sih...untuk outgoing mail menggunakan qmail  ( mail
server utama )  sedangkan postfix di fungsikan hanya sebagai smtp gateway
yaitu menerima email dari ineternet  dan di relay ke qmail itu


----- Original Message ----- From: "Legowo Widyanto" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Wednesday, June 06, 2007 12:28 PM
Subject: Re: [tanya-jawab] Address verification



----- Original Message ----- From: "Vincent" <[EMAIL PROTECTED]>
To: <[email protected]>; <[EMAIL PROTECTED]>
Sent: Wednesday, June 06, 2007 11:47 AM
Subject: Re: [tanya-jawab] Address verification


sebaik nya sih  konfigurasi itu di nonaktifin aja ..pelangamanan saya
kalo itu di aktifin justru false positif  lebih banyak,

bisa di compare dengan salah satu  konfigurasi anti spam postfix saya nih
...ini hanya untuk incoming mail dari internet tidak di gunakan buat
outgoing, dan saya menggunakan amavis untuk frame work AV dan antispam
nya, serta spamassasin + plugins plugins lainnya,  anti virus menggunakan
free bitdefender for linux dan clam av sebagai secondary AV

untuk penggunaan RBL  sebaikk nya di tes- tes list nya, menggunakan
script pflogsumm.pl,   berapa yang bisa di reject, saya pernah test
beberapa RBL, ternyata  yang saya gunakan sekarang ini paling  baik, tapi
tolong kalo ada yang pengalaman,  mohon bisa di kasih masukan juga apakah
konfigursi saya masih ada yang kurang

# AntiUCE
smtpd_helo_required = yes
disable_vrfy_command = yes
message_size_limit = 5120000
smtpd_recipient_restrictions =
   permit_mynetworks
   reject_unauth_destination
   reject_unlisted_recipient
#Whitelist/Blacklist
   check_client_access hash:/etc/postfix/client_access
   check_helo_access hash:/etc/postfix/helo_access
   check_sender_access hash:/etc/postfix/sender_access
   #reject_unknown_client
   #reject_non_fqdn_hostname
   #reject_unknown_hostname
   reject_invalid_hostname
   reject_unauth_pipelining
   reject_non_fqdn_sender
   reject_unknown_sender_domain
   reject_rhsbl_sender dsn.rfc-ignorant.org
   reject_rbl_client dnsbl.sorbs.net
   reject_rbl_client dnsbl.njabl.org
   reject_rbl_client sbl-xbl.spamhaus.org
   reject_rbl_client bl.spamcop.net
   #reject_rbl_client relays.ordb.org
#AMAVIS
content_filter = smtp-amavis:[localhost]:10024
  # check_recipient_access hash:/etc/postfix/maps/recipient_access


From: "Legowo Widyanto" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Tuesday, June 05, 2007 4:31 PM
Subject: [tanya-jawab] Address verification


hallo semuanya...mo tanya neh...

saya punya postfix sebagai mailgateway/relay...

kenapa ya kalo mail server penerima menggunakan "sender address
verification", gagal men-probe address email2 yg ada di kita ?

thk ya ?

legowo


postconf -n

alias_database = hash:/etc/postfix/aliases
alias_maps = hash:/etc/postfix/aliases
command_directory = /usr/sbin
config_directory = /etc/postfix
content_filter = smtp-amavis:[localhost]:10024
daemon_directory = /usr/libexec/postfix
debug_peer_level = 2
disable_vrfy_command = yes
header_checks = regexp:/etc/postfix/header_checks
local_recipient_maps =
local_transport = error:local mail delivery is disabled on this machine
mail_owner = postfix
mailq_path = /usr/bin/mailq
message_size_limit = 10485760
mydestination =
mydomain = marein-re.com
myhostname = mailgw.marein-re.com
mynetworks = xxx.xxx.xxx.xxx/xx, xxx.xxx.xxx.xxx/x, xxx.xxx.xxx.xxx/xx
myorigin = $mydomain
newaliases_path = /usr/bin/newaliases
queue_directory = /var/spool/postfix
relay_domains = $mydomain
relay_recipient_maps = hash:/etc/postfix/relay_users
sendmail_path = /usr/sbin/sendmail
smtp_discard_ehlo_keyword_address_maps = hash:/etc/postfix/no_pipelining
smtpd_client_restrictions = check_client_access
hash:/etc/postfix/client_access, reject_rbl_client sbl.spamhaus.org,
reject_rbl_client relays.ordb.org, reject_rbl_client opm.blitzed.org,
reject_rbl_client list.dsbl.org, reject_rbl_client cbl.abuseat.org,
reject_rbl_client dul.dnsbl.sorbs.net
smtpd_helo_required = yes
smtpd_recipient_restrictions = reject_non_fqdn_recipient,
reject_unknown_recipient_domain, permit_mynetworks,
reject_unauth_destination,  check_recipient_access
hash:/etc/postfix/recipient_access
smtpd_sender_restrictions = check_sender_access
hash:/etc/postfix/sender_access, reject_non_fqdn_sender,
reject_unknown_sender_domain, reject_rhsbl_sender relays.ordb.org,
reject_rhsbl_sender opm.blitzed.org
transport_maps = hash:/etc/postfix/transport
virtual_alias_maps = hash:/etc/postfix/virtual

log-nya :

The Postfix program

<[EMAIL PROTECTED]>: host xxx.ABC.com[xxx.xxx.xxx.xxx] said:
   550-Verification failed for <[EMAIL PROTECTED]>
550-Previous
   (cached) callout verification failure 550-Sender verification failed
   (Sending test bounce to 550 [EMAIL PROTECTED] failed).
(in
   reply to RCPT TO command)



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konfigurasi yang mana yang dinonaktifkan pak...
tp btw list RBL-nya akan saya contek,,,thks pak...
kalo masalah konfigurasi "address verification", saya memang tdk
mengaktifkan pak....tetapi mail server remote/penerima yg mengaktifkan
fitur tsb, shg email dr kita selalu dibounce oleh mereka ( mail server
penerima/remote)...dan saya berkesimpulan ( mudah2-an benar ), mail server
remote/penerima tidak dpt men-probe alamat email user2 yg ada di "
relay_recipient_maps = hash:/etc/postfix/relay_users "...terus saya masih
bingung gmana biar mail server penerima/remote dpt berhasil menprobe
alamat email kita itu valid? demikian pak...

thks atas atensinya...

Legowo


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