Prevent anyone from sending email between local users
user180685 asked: I’m trying to prevent anonymous users from potentially being able to send email from one local user to another. If someone knows the email addresses of 2 accounts …
postfix sasl authentication error in centos 7
ram khanal asked: Hello friends i am very new to linux server setup and maintenance field i am using centos 7 and i have given a task to setup postfix …
Postfix — mandatory TLS encryption not working for port 25 "relay sending"
71GA asked: On my Postfix server I use port 465 for submission, and port 25 for relay ("relay receiving" and "relay sending"). I use port 993 configured in Dovecot for …
Using "postfix" user for "dovecot"
71GA asked: I set the Postfix so that my mailboxes (maildir format) for my virtual users are set like this: ┌───┐ │ # │ root > myserver > ~ └─┬─┘ …
ec2 instance will not allow connections to port from within instance after opening port on security group
NotGaeL asked: I have an EC2 instance on a security group that allows ports 80, 443 and 22 (tcp, inbound from 0.0.0.0/0 and ::/0); and every outbound connection (to 0.0.0.0/0 …
Disable Postfix server TLS for specific clients
Adrien Clerc asked: I encountered troubles with some bad server trying to send me some emails that I desesparetely need. I can disable TLS globally using smtpd_tls_security_level, but it’s really …
Getting postfix to relay SMTP/SSL/TLS to Charter/Spectrum
Nstevens asked: I’m running Postfix on Debian as an MX for a small LAN and trying to get SMTPS working with mobile.charter.net over port 587. I followed a few links …
Parsing mail logs
Julian asked: Below is a link to an extract from my Postfix server’s mail log, showing one successful SMTP transaction. Is it possible to configure Postfix to add a unique …
Provider for outgoing mail from own Postfix server
svoop asked: I’ve been running Postfix on my own dedicated server (hosted by Hetzner) for years, however, it’s getting increasingly difficult get outgoing mail to Outlook/Hotmail and sometimes Google delivered. …
Postfix – Can Send / Receive Localy – Send External – Not receive from external
京子シオリ asked: I just finish configuring my own mail server using this guide: LinuxBabe Guide At the start all was working but now I can not receive mail from external. …