I current use Promox as MTA, the email from mail server send out to Proxmox in Internal SMTP Port. Now I want to block the file send out with zip password. I found the setting "Block encrypted archives and documents" in Virus Detector but seems that it no affect to my current case.
I tried the phishing test with my email gateway, the phishing email successfully pass all spam check and delivered to user. It can fake the sender even spf required.
Here is the log, can anybody have experience on?
Mar 23 13:10:50 smgw2 postfix/postscreen: CONNECT from...
I had an issue with the meeting invitation from Google Suite email. Many users from Gmail or Google Suite send the meeting invitation to Promox MailGW, few email were rejected
Jan 20 14:58:24 proxmox1 postfix/smtpd: connect from mail-yb1-f201.google.com[22.214.171.124]
Today my email system have a lot of fake email, the user send email to himself and here is the log in proxmox
I am not sure why there are not spf check in the log event i checked Use SPF
Dec 22 13:30:05 proxmox2 postfix/smtpd: connect from unknown[126.96.36.199]
I am newbie with Proxmox mailgw. I used the DNSBL in setting with zen.spamhaus.org, threshold 1.
But i found that lots of messages were rejected, such as bellow but in spamhaus it clean ip
RCPT from [188.8.131.52]:34373: 550 5.7.1 Service unavailable; client [184.108.40.206] blocked...