OS version: Ubuntu 24.04 LTS
I need to deploy a simple smtp relay that supports basic auth (client side)
I have problems with SASL, even if the user and password are correct I get this error:
SASL LOGIN authentication failed: authentication failure, sasl_username=relay@ub1
The user seems to exist
prx@ub1:~$ sudo sasldblistusers2
relay@ub1: userPassword
If I try credentials in this way, I get authentication failed
prx@ub1:~$ sudo testsaslauthd -u relay@ub1 -p pwd
0: NO "authentication failed"
If I try in this way I get Success
prx@ub1:~$ sudo testsaslauthd -u relay -p pwd
0: OK "Success."
main.cf
See /usr/share/postfix/main.cf.dist for a commented, more complete version
#myorigin = /etc/mailname
smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)
biff = no
appending .domain is the MUA's job.
append_dot_mydomain = no
Uncomment the next line to generate "delayed mail" warnings
#delay_warning_time = 4h
readme_directory = no
See http://www.postfix.org/COMPATIBILITY_README.html -- default to 3.6 on
fresh installs.
compatibility_level = 3.6
relay
relayhost = relay.external.internet
smtpd_sasl_type = cyrus
smtpd_sasl_auth_enable = yes
smtpd_sasl_security_options = noanonymous
smtpd_sasl_local_domain = $myhostname
smtpd_recipient_restrictions = permit_sasl_authenticated, permit_mynetworks, reject_unauth_destination
smtpd_tls_security_level = may
smtpd_tls_CAfile = /etc/ssl/certs/ca-certificates.crt
Log debug
debug_peer_list = 127.0.0.1
Where I'm wrong?
