On 9/11/25 07:47, Syafril Hermansyah via Mdaemon-L wrote:
Jadi kalau ingin menolak NULL sender gunakan Content Filter rule.
https://help.mdaemon.com/SecurityGateway/en/content_filter_list.html
misalkan:
Conditions01: If Mail From Is equal to <>
Actions 01: Quarantine the message
Atau block sender host.
Block Permanent, dengan block list
https://help.mdaemon.com/SecurityGateway/en/blocklists_hosts.html
Block temporary, dengan dynamic screening
https://help.mdaemon.com/SecurityGateway/en/dynamic_screening.html
Tetapi Internet Mail juga ada ketentuan, bahwa Mail dari NULL sender
(MAIL FROM < >) akan menggunakan Sender host sebagai Authentication
address (SPF host domain), dan di spamassassin ada rule nya (maaf saya
lupa namanya), tinggal dinaikkan saja spam scorenya atau di quarantine
Baru ingat namanya: SPF_HELO_PASS
https://serverfault.com/questions/1064046/how-do-i-prevent-the-spf-helo-none-warning-when-sending-from-postfix
Menaikkan spam score
https://knowledge.mdaemon.com/how-to-configure-customized-scores-for-spam-assassin-rules
Di Security Gateway ada menu nya disini
https://help.mdaemon.com/SecurityGateway/en/
sender_policy_framework_spf.html
[x] Verify sending host using SPF
By default, SecurityGateway will check the sending domain's DNS record
to see if the sending host has the authority to send email on its
behalf. This uses the domain found in the MAIL value passed during SMTP
processing. Clear this checkbox if you do not wish to use SPF processing.
When SPF processing returns a SOFT FAIL result:
[x] ..quarantine the message
atau
...add [xx] points to message score
--
syafril
--------
Syafril Hermansyah
MDaemon-L Moderator, run MDaemon 25.5.0
Mohon tidak kirim private mail (atau cc:) untuk masalah MDaemon.
Nasihat yg terbaik diberikan oleh pengalaman. Tp nasehat itu datangnya
sering terlambat
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