[pfx] Re: Roundcube question

[Dimitris via Postfix-users]

Στις 28/6/24 12:14, ο/η Jeff Peng via Postfix-users έγραψε:
Other webmail such as snappy can connect to many smtp/imap backends, 
such as yahoo/outlook/gmail, they can be set up in one installation.


roundcube does the same as snappy , by manually editing config.inc.php 
(iirc). eg...:


$config['smtp_host'] = array(
'mx1' => 'tls://mx1:587',
'mx2' => 'tls://mx2:587',
'mx3' => 'tls://mx3:587');

similar with imap_host...

d.
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[pfx] Re: DANE and STS

[Dimitris via Postfix-users]

Στις 26/6/24 14:19, ο/η Jeff Pang via Postfix-users έγραψε:


May I ask if the main providers like gmail, outlook, yahoo, proton, gmx 
etc, have smtp-dane deployed?





there is also this online test tool :

https://en.internet.nl/mail/gmail.com/1276778/
https://en.internet.nl/mail/outlook.com/1276787/
https://en.internet.nl/mail/proton.me/1276789/


d.
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[pfx] Re: secure the email system

[Dimitris via Postfix-users]

Στις 13/6/24 03:51, ο/η Jeff Peng via Postfix-users έγραψε:


3. use policyd-rate-limit to limit sending rate.
5. use policyd-spf to check sender IP's SPF and reject the failed one.
6. use opendmarc to check sender domain's DMARC and reject the failed one.
7. opendkim is also deployed for either incoming messages (check 
signatures) or outgoing messages (add signatures).

9. rspamd for email content security (not deployed yet).



3,5,6,7 can be achieved with 9 (=rspamd when deployed). there are rspamd 
modules for those features.

so, no need to keep extra daemons if you dont specifically need those...


2c.
d.
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[pfx] Re: Forward mail

[Dimitris via Postfix-users]

Στις 13/4/24 13:51, ο/η Paul van der Vlis via Postfix-users έγραψε:



Unfortunately, I have quite a few customers who want to receive email 
from their own domain at a different email address, such as a Gmail or 
Hotmail address. I forward this in /etc/postfix/virtual.


a totally different approach :
you could advise those with gmail accounts to use gmail as an email 
client and pull emails from your server.
maybe not ideal (=trusting their email credentials within google), but 
eitherway, people using gmail already share too much personal data with 
them. :)


2c.
d.
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[pfx] Re: reliable RBL

[Dimitris via Postfix-users]

Στις 11/4/24 10:59, ο/η Matus UHLAR - fantomas via Postfix-users έγραψε:




It still works, but you may need supplementary software as amavis, 
sagator, spamass-milter or mimedefang because SpamAssassin only focuses 
on classification, not about delivery.


iirc, you also need a compiler installed (for SA rules).

d.
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