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When remote server send emails to PMG,the PMG will send something like: 220-xxxxxx Then wait for 15~20 seconds,send the response 220 xxxxxx How to disable this function?

I found very strange things today,there are mails quarantined,but at the spam quarantine,there is nothing there after 24-JAN,see the attachment

See some error in logs: pmgproxy[1062055]: Unable to convert text in character set `GB18030' to UTF-8... ignoring at /usr/share/perl5/MIME/Head.pm line 799

I found some strange log recectly,my version is: Version: 7.3-3,the log is as below: Apr 18 19:00:08 postfix pmgproxy[1125188]: detected empty handle Apr 18 19:00:13 postfix pmgproxy[1125188]: detected empty handle Apr 18 19:00:18 postfix pmgproxy[1125188]: detected empty handle Apr 18 19:00:23...

1: Local exchange server connect to Proxmox Internal SMTP port: 26 for outgoing emails. 2: At /etc/postfix/invalidemail,i have such content and run postmap for /etc/postfix/invalidemail dsfcdsf@gmail.com REJECT No such user found on the system. sdsff@gmail.com REJECT No such user found on...

reject_unknown_sender_domain Will reject email if mail from domain has neither mx record nor a record,for some spammer,they will sending forged emails that has A record but no MX record,in that case,if the IP is clean,postfix is accepted by default. If there any way to direct block those without...

yesterday,i run: apt-get install opendkim,opendkim-tools,and config master.cf as below: smtpd pass - - - - 98 smtpd -o content_filter=scan:127.0.0.1:10024 -o smtpd_discard_ehlo_keywords=silent-discard,dsn -o mynetworks=127.0.0.0/8 -o...

The clamav can never start,the error is as low. Version 7.0-8 Oct 22 20:51:48 postfix pmgdaemon[1133]: starting task UPID:postfix:00003619:000470B1:6172B3E4:srvstart:clamav-daemon:root@pam: Oct 22 20:51:48 postfix pmgdaemon[13849]: starting service clamav-daemon...

When restore the email at the spam quatantine,is it possible to keep the original sender email at SMTP dialogue? I saw it always using the email address i set at Administrator Email.