[SOLVED] How to sync zimbra account

[Chris66]

I am using zimbra to be our mail server, I can find many spam mails in spam quarantine area.
From E-mail field, I can choose an email address to see mail content. I can also find many email accounts that don't exist on zimbra server.

My question is how to sync mail account from zimbra?
Our zimbra server uses internal account, it doesn't use LDAP, but I know there is an internal LDAP system in zimbra system.

My idea is to sync email account from zimbra, if zimbra has that account, proxmos will check this email if spam or virus email, if an email doesn't have account in zimbra, proxmos doesn't need to do anything, and no need to keep this email in proxmos system.

 

[hata_ph]

If your zimbra server can reject non existence emails, just enable Mail Proxy - Options - Verify Receivers.

Or use mail filter to block/quarantine ldap filter from your zimbra server.

https://dhenandi.com/prevent-spam-email-using-ldap-verification-on-proxmox-mail-gateway/

 

[Chris66]

Now, I configure verify receivers setting, and I used telnet proxmox 25 port to test.
There is no yd user on xxx.com, but proxmox still reply me 250 ok message.

220 spam.xxx.com ESMTP Proxmox
helo dd.com
250 spam.xxx.com
mail from:yudfd.d@ucom.com
250 2.1.0 Ok
RCPT to:yd@xxx.com (my email server doesn't have yd account)


250 2.1.5 Ok

 

[hata_ph]

Pls provide the smtp log

 

[Chris66]

Hi, I list mail.log from proxmox.

Aug 17 10:05:49 spam postfix/postscreen[28799]: CONNECT from [192.168.125.203]:5292 to [192.168.254.11]:25
Aug 17 10:05:49 spam postfix/postscreen[28799]: WHITELISTED [192.168.125.203]:5292
Aug 17 10:05:49 spam postfix/smtpd[28800]: connect from unknown[192.168.125.203]
Aug 17 10:06:37 spam postfix/smtpd[28800]: 4399D3C0B9B: client=unknown[192.168.125.203]
Aug 17 10:06:44 spam pmgpolicy[994]: starting policy database maintainance (greylist, rbl)
Aug 17 10:06:44 spam pmgpolicy[994]: end policy database maintainance (13 ms, 4 ms)
Aug 17 10:06:46 spam postfix/cleanup[29642]: 4399D3C0B9B: message-id=<>
Aug 17 10:06:46 spam postfix/qmgr[9587]: 4399D3C0B9B: from=<dsfds@dfd.com>, size=517, nrcpt=1 (queue active)
Aug 17 10:06:46 spam pmg-smtp-filter[26140]: 2020/08/17-10:06:46 CONNECT TCP Peer: "[127.0.0.1]:52640" Local: "[127.0.0.1]:10024"
Aug 17 10:06:46 spam pmg-smtp-filter[26140]: 3C0C515F39E636177B1: new mail message-id=
Aug 17 10:06:46 spam pmg-smtp-filter[26140]: 3C0C515F39E636177B1: SA score=6/5 time=0.425 bayes=0.42 autolearn=no autolearn_force=no hits=ALL_TRUSTED(-1),BAYES_50(0.8),KAM_DMARC_STATUS(0.01),MISSING_DATE(1.36),MISSING_FROM(1),MISSING_HEADERS(1.021),MISSING_MID(0.497),MISSING_SUBJECT(1.799),SPF_SOFTFAIL(0.665)
Aug 17 10:06:46 spam pmg-smtp-filter[26140]: 3C0C515F39E636177B1: moved mail for <yd@xxx.com> to spam quarantine - 3C0E1F5F39E63686F5F (rule: Quarantine/Mark Spam (Level 3))
Aug 17 10:06:46 spam pmg-smtp-filter[26140]: 3C0C515F39E636177B1: processing time: 0.527 seconds (0.425, 0.023, 0)
Aug 17 10:06:46 spam postfix/lmtp[29699]: 4399D3C0B9B: to=<yd@xxx.com>, relay=127.0.0.1[127.0.0.1]:10024, delay=30, delays=29/0.02/0/0.63, dsn=2.5.0, status=sent (250 2.5.0 OK (3C0C515F39E636177B1))
Aug 17 10:06:46 spam postfix/qmgr[9587]: 4399D3C0B9B: removed



192.168.254.11 is proxmox server.
192.168.125.203 is my notebook IP

 

[hata_ph]

I think is because you have whitelisted your internal IP. Try send from external.

Aug 17 10:05:49 spam postfix/postscreen[28799]: WHITELISTED [192.168.125.203]:5292

 

[Chris66]

I think is because you have whitelisted your internal IP. Try send from external.

Thank you for your note.
I test it outside company, it is working.