On 2023/06/20 10:00:52 +0200, Carlos E. R. wrote:
On 2023-06-20 03:08, Marc Chamberlin via openSUSE Users wrote:
On 6/19/23 17:40, Carlos E. R. wrote:
On 2023-06-20 01:58, Marc Chamberlin via openSUSE Users wrote:
As always, thoughts and comments are much appreciated! Marc....
I'm confused.
I run the default postfix, which listens to port 25, and includes a sendmail binary, which can be called with no tricks to send mail.
No tricks at all.
Hi Carlos
"which listens to port 25" That's the problem with most MTA's, they listen on port 25 and I can't allow that.
Block it in the firewall.
And probably listening on 25 can be disabled in postfix, but not something I have investigated.
If no sendmail daemon is running (aka stopped and disabled via systemctl) or if running but configured not to listen on port 25 aka smtp on 127.0.0.1 as well as on ::1 (change /etc/mail/linux.mc based on the README below /usr/share/sendmail/ and use the m4 command below /etc/mail/ to generate the /etc/sendmail.cf ) ... but be aware that if no other daemon is listen on 127.0.0.1 as well as on ::1 at port 25 you'll get a connection refused. Check this with sudo ss -lntp | grep :25 to see if port 25 is provided by a daemon Btw: this is not a bug ;) Werner -- "Having a smoking section in a restaurant is like having a peeing section in a swimming pool." -- Edward Burr