Re: delaying postfix until/unless VPN is up/connected

[Tessa Plum]

sorry just OT, my VPS has only IPv6 interface, can I deploy it as mail 
server?


Thank you.
Tessa

Peter wrote:

Actually it's an interface name (such as tun0), not an IP address:

remove sender source IP

[Tessa Plum]

greetings

When acting as outgoing smtp server of Postfix, is there a configuration 
to remove sender's source IP from the msg header? Just to keep privacy 
better.


Thank you.
Tessa

Re: remove sender source IP

[Tessa Plum]

On 2020/4/2 2:49 下午, Viktor Dukhovni wrote:

See the REPLACE action in the header_checks(5) manpage.  It is best to
lightly censor, rather than entirely remove the locally added "Received"
header.  Not adding one at all can make the message look more spammy.


thanks Viktor for quick response.

I will replace it to "127.0.0.1" to make it looks more normal.

regards.

question on gmail smtp relay

[Tessa Plum]

Hello

We can send email from any domain within gmail, setup it via gmail's 
smtp relay in web interface.


My question is, won't this break something like SPF/DKIM for those 
external domains?


Thank you.

Re: AW: STMP is rejecting and i'm not sure why

[Tessa Plum]

Hi Wietse,

As an incoming MTA, after Postfix receive messages, which part takes the 
duty of saving messages to disk?


Is this possible that messages were stored into disk by encrypted?

Thank you.


Wietse Venema wrote:

The remote server (server.sub.dom.local [xx.xx.xx.xx]) says:

 550 5.7.1: Recipient address rejected:
 Recipient domain dom.local is not used. (in reply to RCPT TO command)

Re: anyone getting live bounce messages?

[Tessa Plum]

MS's email systems always sucks. They even put the messages sent by MS 
itself to the junk folder. Any new domain sending messages to 
outlook/live is a nightmare.


Thanks.



David Mehler wrote:

Is anyone getting bounce messages from live.com? I'm emailing a friend
and got confirmation that he is seeing the messages, but I'm getting a
bounce message that is ending up in spam. Any ideas?

Re: Hijacked thread, now about queue encyption

[Tessa Plum]

That's right. Thank you so much.

Tessa

On 2020-04-04 02:10, Wietse Venema wrote:

Tessa Plum:

Hi Wietse,

As an incoming MTA, after Postfix receive messages, which part takes 
the

duty of saving messages to disk?


The cleanup(8) daemon writes incoming mail to a queue file.

There are about a dozen other daemons that read from a queue file.


Is this possible that messages were stored into disk by encrypted?


One solution is to use full-disk encyption i.e. there are no keys
stored as plaintexxt on the disk, the disk is unreadable when the
server is shut down, and Postfix does not manage encryption keys.

Otherwise, Postfix would need to manage encryption keys to store
messages and decryption keys to deliver messages. The big question
is The big question is where would Postfix get the keys from? They
should not be stored as plaintext on the disk.

If you want encryption only, then you will need an external milter
or external content filter that replaces plaintext content with
encrypted content. See 
http://www.postfix.org/CONTENT_FILTER_READ+ME.html

for an overview of the options.

Wietse

antispam system powered by machine learning

[Tessa Plum]

Hello,

Would you please suggest the antispam system which is powered by machine 
learning model/policy?


I am working on ML/DL research filed and would like to know this 
industry system.


Thank you.

--
Tessa Plum
https://plum.ovh/