Topics

1

Postfix / postfix only allow PDF attachments

« on: September 24, 2024, 11:48:34 AM »

Hello. I made the following settings but why is it blocking all attachments?
Why does it block all files including PDF?

main.cfg file content :
header_checks = pcre:/etc/postfix/header_checks

header_checks file content :

#(this working)
/^Subject:.*expires.*$/i DISCARD   


# only allow .pdf but blocking all attachments?  pdf file also blocked.
/^Content-Disposition:.*filename=.*\.pdf$/ OK
/^Content-Disposition:.*filename=.*$/ REJECT

Thanks in advance.

2

E-Mail / How to use only e-mail in CWP7?

« on: January 06, 2024, 07:08:19 PM »

The website is running on another server. Is it possible to host only emails in cwp7? I will direct the mx settings from the domain company to cwp7. (like mx.***.com -> 123.123.123.123) So what should I do in CWP7? Thank you in advance for your guidance.

3

E-Mail / Preventing Sending E-mails from Non-Existent Addresses: How to Verify Sender's E

« on: August 04, 2023, 09:26:25 AM »

How to prevent sending e-mails from non-existent e-mail addresses? In other words, how should the sender's e-mail address be verified on the server before sending an e-mail, and then how should be followed to send it?

4

E-Mail / There is a CWP server vulnerability. Please help me.

« on: January 19, 2023, 10:53:52 AM »

Mail is being sent from my domain name against my request on my CWP server.HELP

Please help URGENTLY.
Log records as follows:
helo=87-207-170-128.dynamic.chello.pl, from=qdzftt632@xxx.com.tr, to=qdzftt632@xxx.com.tr,

The domain mentioned here is mine, but I do not have such mails. Spam is constantly being sent.

_dmarc   14400   IN   TXT   "v=DMARC1; p=reject"
@   14400   IN   TXT   "v=spf1 +a +mx +ip4:xxxxxxx ip4:xxxxxxx -all"

also it is not possible for them to steal any password from me.