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7
votes
3answers
6k views

How to enforce sender address to be “logged-in-user@example.org” in Postfix?

I have set up a Postfix server with SMTP AUTH (STARTTLS on port 587). All my users are in the domain "example.org". I want to enforce the sender address to be "logged-in-user@example.org". I learned ...
3
votes
2answers
4k views

SMTP-AUTH required for local domains?

Here is the problem: From any IP address not belonging to your mail server: telnet me.myemailserver.com 25 helo me.someserver.com mail from: <yourusername@mydomain.com> rcpt to: <...
0
votes
1answer
3k views

Postfix on Ubuntu tried everything, won't send emails

I'm trying to get postfix set-up on Ubuntu 13.04 but no luck so far. I found a few answers here on ServerFault that didn't work. I re-installed a bunch of times, nothing. This is my first time dealing ...
7
votes
2answers
4k views

Can't get SASL auxprop/sasldb working with postfix/Ubuntu 12.04

I have an Ubuntu 8.04LTS system running Postfix 2.5.1. On that system SMTP AUTH runs fine. The contents of /etc/postfix/sasl/smtpd.conf are: pwcheck_method: auxprop auxprop_plugin: sasldb mech_list: ...
3
votes
1answer
7k views

Postfix + SASL = “Relay Access Denied” when sending from outside the network

I have in /etc/postfix/main.cf: smtpd_sasl_auth_enable = yes smtpd_recipient_restrictions = permit_sasl_authenticated, permit_mynetworks, reject_unauth_destination and SASL seems to be working: $ ...
2
votes
1answer
922 views

check header for Authenticated sender in postfix

My users send email with SMTP AUTH via SASL Authentification. Unfortunately their mails would marked as NoBounceOpenRelay by Amavis. So I set this to postfix main.cf smtpd_sasl_authenticated_header ...
1
vote
1answer
230 views

Setup Postfix with SMTP-AUTH over SASL2 with SASLDB for users to send emails

Hello, I spent the last few days trying to setup Postfix with SASLDB to send emails from my application over SMTP on Ubuntu Server 15.04. I searched, read and tested a lot about it but I can't get it ...
1
vote
3answers
4k views

Spamhaus PBL stops email even though SMTP-AUTH is enabled

My emails to D-Link get bounced due to my Comcast IP being on the Spamhaus PBL. Spamhaus says there's no way to get removed from the list and the only way to bypass this filter is to enable SMTP-AUTH....