Fwd: Re: How to reject mails where from address and to address is myself.

2019-06-04 Thread Edouard Guigné
transféré Sujet : Re: How to reject mails where from address and to address is myself. Date : Tue, 04 Jun 2019 09:12:59 -0400 De :Bill Cole Répondre à :Postfix users Pour : Postfix users On 4 Jun 2019, at 8:00, Edouard Guigné wrote: Does reject_unauthenticated_sender_login_mi

Fwd: Re: How to reject mails where from address and to address is myself.

2019-06-04 Thread Edouard Guigné
Hello, I am facing this kind of issue too. To stop this, I follow http://www.postfix.org/RESTRICTION_CLASS_README.html to restrict usage of list diffusion to local lan. Amavis and spamassassin are also installed on my mail system with postfix, but recently, spammers use image inside body of

Postfix brute force attack on port 25...

2019-03-13 Thread Edouard Guigné
Dear Postfix users, I manage a postfix server (version 2.5.5) I set fail2ban to stop brute force attack on port 25 for postfix (and auth command). Today there are lots of ip banned for postfix... much more than usually... (see my log.txt) Port 25 is set on my server to not allow sasl authe

Old linux / postfix version - how add DKIM ?

2019-02-21 Thread Edouard Guigné
Hello, My mail server is intalled in a old deprecated linux version (debian 5.0) with postfix 2.5.5 I did not installed this linux box, only managing it. I plan to change this server with an other solution (e.g. Zimbra), but this is not the today priority. I succeed to configure SPF record