# Postfix smtpd\_sasl\_auth\_enable = yes no working **URL:** \ **Category:** Rocky Linux Help & Support\ **Created:** [September 1, 2024, 9:45am UTC](https://forums.rockylinux.org/t/postfix-smtpd-sasl-auth-enable-yes-no-working/15677 "2024-09-01T09:45:56Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![au7](https://avatars.discourse-cdn.com/v4/letter/a/b19c9b/32.png) [@au7](https://forums.rockylinux.org/u/au7)\ **Post date:** [September 1, 2024, 9:45am UTC](https://forums.rockylinux.org/t/postfix-smtpd-sasl-auth-enable-yes-no-working/15677/1 "2024-09-01T09:45:56Z")
Helo! If I postfix smtpd\_sasl\_auth\_enable = yes in main.cf telnet 127.0.0.1 25 no answer and 25 port local not work or telnet 192.168.xx.xx in local network 25 port no answer. Escape character is ‘^]’. Connection closed by foreign host. Firewal and selinux is off Why not working smtpd\_sasl\_auth\_enable ? posfix ver 2:3.5.9-24.el9 rocky linux 9.4 If not enabled smtpd\_sasl\_auth\_enable = yes ( #smtpd\_sasl\_auth\_enable = no ) Trying 127.0.0.1… Connected to 127.0.0.1. Escape character is ‘^]’. 220 mail.xx.xx ESMTP But there is no authorization everything works Please help! I don’t understand something In another distrib for exaple Rocky 8.10 (postfix 2:3.5.8-7.el8 ), Debian12 everything works ---
**Author:** ![Vittory003](https://sea2.discourse-cdn.com/flex020/user_avatar/forums.rockylinux.org/vittory003/32/4694_2.png) [@Vittory003](https://forums.rockylinux.org/u/Vittory003)\ **Post date:** [September 2, 2024, 12:29pm UTC](https://forums.rockylinux.org/t/postfix-smtpd-sasl-auth-enable-yes-no-working/15677/2 "2024-09-02T12:29:10Z")
Hi, @au7 First, check the Postfix logs for any specific SASL or authentication errors. The logs are usually located in `/var/log/maillog` or `/var/log/mail.log`. ```auto sudo tail -f /var/log/maillog ``` Next Make sure your SASL configuration is correct. In particular, check the following: - **smtpd\_sasl\_path** : Make sure it points to the correct SASL directory: ```auto smtpd_sasl_path = smtpd ``` - **smtpd\_sasl\_type** : Specify the type of SASL used. For example: ```auto smtpd_sasl_type = cyrus ``` or ```auto smtpd_sasl_type = dovecot ``` ### 3. **Check SASL installation** Verify that the necessary SASL packages are installed. For example, for Cyrus SASL, you should have packages like `cyrus-sasl`, `cyrus-sasl-lib` and `cyrus-sasl-plain` installed. ```auto sudo dnf install cyrus-sasl cyrus-sasl-plain cyrus-sasl-lib ``` ### 4. **Check SELinux configuration** Even if SELinux is disabled, previous configurations may still cause problems. Make sure SELinux is completely disabled and check that no residual rules are interfering. ```auto sudo sestatus ``` If you still have problems post your log error here 😉 ---
**Author:** ![au7](https://avatars.discourse-cdn.com/v4/letter/a/b19c9b/32.png) [@au7](https://forums.rockylinux.org/u/au7)\ **Post date:** [September 2, 2024, 12:37pm UTC](https://forums.rockylinux.org/t/postfix-smtpd-sasl-auth-enable-yes-no-working/15677/3 "2024-09-02T12:37:31Z")
> [@au7](#): > > smtpd\_sasl\_auth\_enable I found a solution 1 dnf install cyrus-sasl-plain !!! > ---
**Author:** ![au7](https://avatars.discourse-cdn.com/v4/letter/a/b19c9b/32.png) [@au7](https://forums.rockylinux.org/u/au7)\ **Post date:** [September 2, 2024, 12:40pm UTC](https://forums.rockylinux.org/t/postfix-smtpd-sasl-auth-enable-yes-no-working/15677/4 "2024-09-02T12:40:53Z")
> [@Vittory003](#): > > `dnf install cyrus-sasl cyrus-sasl-plain cyrus-sasl-lib` Thaks! Topic may closed ---
**Author:** ![mrd83](https://sea2.discourse-cdn.com/flex020/user_avatar/forums.rockylinux.org/mrd83/32/4638_2.png) [@mrd83](https://forums.rockylinux.org/u/mrd83)\ **Post date:** [September 3, 2024, 9:09pm UTC](https://forums.rockylinux.org/t/postfix-smtpd-sasl-auth-enable-yes-no-working/15677/5 "2024-09-03T21:09:24Z")
Let me add an interesting fact about postfix: it’s configuration directives often differ by a single **“d”** letter, for example there are both [smtpd\_sasl\_auth\_enable](https://www.postfix.org/postconf.5.html#smtpd_sasl_auth_enable) and [smtp\_sasl\_auth\_enable](https://www.postfix.org/postconf.5.html#smtp_sasl_auth_enable) parameters. The quick and dirty way to understand the difference between those is that - smtp daemon (== persistent process) handles email transfer between servers, while - smtp **d** daemon is what you utilize (along with IMAP or POP3) on your email client to fetch emails from the server. I once modified an image I googled (to explain ports used by email servers, on another forum) - but let me also leave it here, to illustrate what I have in mind: ![mta_flow - modified PL](https://us1.discourse-cdn.com/flex020/uploads/rockylinux/original/2X/5/51498fc5c459493a324f3a9db9f3c6cbdfb3ad84.jpeg) In the image (and in real life ;]) Postfix acts as both MDA and MTA-relay. ---
**Author:** ![system](https://us1.discourse-cdn.com/flex020/uploads/rockylinux/original/1X/91b7219eec10e30013422e4df76c1d898711a5d5.svg) [@system](https://forums.rockylinux.org/u/system)\ **Post date:** [November 2, 2024, 9:10pm UTC](https://forums.rockylinux.org/t/postfix-smtpd-sasl-auth-enable-yes-no-working/15677/6 "2024-11-02T21:10:21Z")
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