Hi,
I am trying to create an authenticated relay server using Postfix and Dovecot.
However I am having two problems :
(a) If I create a dovecot config entry as follows :
unix_listener /var/spool/postfix-authrelay/private/dovecot-auth { group = postfix mode = 0666 user = postfix }
Dovecot is unable to create the socket ? I thought surely if dovecot is started as root it should create the socket before dropping privileges ?
(b) The alternative method of TCP SASL is not working either:
250 DSN
ehlo localhost
250-foobar.example.com
250-PIPELINING
250-SIZE 20480000
250-ETRN
250-AUTH PLAIN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN
AUTH PLAIN
and in the logs... 2018-10-11T10:17:40.491483+01:00 X postfix-authrelay/smtpd[18312]: warning: X[X]: SASL PLAIN authentication failed:
#### #### postconf ####
postconf -a cyrus dovecot
postconf -c /etc/postfix-authrelay | fgrep sasl broken_sasl_auth_clients = no cyrus_sasl_config_path = lmtp_sasl_auth_cache_name = lmtp_sasl_auth_cache_time = 90d lmtp_sasl_auth_enable = no lmtp_sasl_auth_soft_bounce = yes lmtp_sasl_mechanism_filter = lmtp_sasl_password_maps = lmtp_sasl_path = lmtp_sasl_security_options = noplaintext, noanonymous lmtp_sasl_tls_security_options = $lmtp_sasl_security_options lmtp_sasl_tls_verified_security_options = $lmtp_sasl_tls_security_options lmtp_sasl_type = cyrus proxy_read_maps = $local_recipient_maps $mydestination $virtual_alias_maps $virtual_alias_domains $virtual_mailbox_maps $virtual_mailbox_domains $relay_recipient_maps $relay_domains $canonical_maps $sender_canonical_maps $recipient_canonical_maps $relocated_maps $transport_maps $mynetworks $smtpd_sender_login_maps $sender_bcc_maps $recipient_bcc_maps $smtp_generic_maps $lmtp_generic_maps $alias_maps $smtpd_client_restrictions $smtpd_helo_restrictions $smtpd_sender_restrictions $smtpd_relay_restrictions $smtpd_recipient_restrictions $address_verify_sender_dependent_default_transport_maps $address_verify_sender_dependent_relayhost_maps $address_verify_transport_maps $fallback_transport_maps $lmtp_discard_lhlo_keyword_address_maps $lmtp_pix_workaround_maps $lmtp_sasl_password_maps $lmtp_tls_policy_maps $mailbox_command_maps $mailbox_transport_maps $postscreen_discard_ehlo_keyword_address_maps $rbl_reply_maps $sender_dependent_default_transport_maps $sender_dependent_relayhost_maps $smtp_discard_ehlo_keyword_address_maps $smtp_pix_workaround_maps $smtp_sasl_password_maps $smtp_tls_policy_maps $smtpd_discard_ehlo_keyword_address_maps $smtpd_milter_maps $virtual_gid_maps $virtual_uid_maps proxy_write_maps = $smtp_sasl_auth_cache_name $lmtp_sasl_auth_cache_name $address_verify_map $postscreen_cache_map send_cyrus_sasl_authzid = no smtp_sasl_auth_cache_name = smtp_sasl_auth_cache_time = 90d smtp_sasl_auth_enable = no smtp_sasl_auth_soft_bounce = yes smtp_sasl_mechanism_filter = smtp_sasl_password_maps = smtp_sasl_path = smtp_sasl_security_options = noplaintext, noanonymous smtp_sasl_tls_security_options = $smtp_sasl_security_options smtp_sasl_tls_verified_security_options = $smtp_sasl_tls_security_options smtp_sasl_type = cyrus smtpd_recipient_restrictions = permit_mynetworks,permit_sasl_authenticated,reject_unauth_destination smtpd_relay_restrictions = permit_mynetworks,permit_sasl_authenticated,reject_unauth_destination smtpd_sasl_auth_enable = yes smtpd_sasl_authenticated_header = no smtpd_sasl_exceptions_networks = smtpd_sasl_local_domain = $myhostname smtpd_sasl_path = inet:localhost:7425 smtpd_sasl_security_options = noanonymous smtpd_sasl_service = smtp smtpd_sasl_tls_security_options = $smtpd_sasl_security_options smtpd_sasl_type = dovecot
#### #### DOVECONF ####
doveconf -n # 2.3.1 (8e2f634): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.1 (d9bc6dfe) # OS: Linux 4.12.14-lp150.12.19-default x86_64 # Hostname: test.example.com managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date index ihave duplicate mime foreverypart extracttext namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = } passdb { driver = pam } plugin { sieve = file:~/sieve;active=~/.dovecot.sieve } service auth { inet_listener { address = 127.0.0.1 port = 7425 } inet_listener { address = ::1 port = 7425 } # If I disable this, dovecot loads fine, but the tcp auth is unusable ? # If I enable this, dovecot is unable to create the socket ? # unix_listener /var/spool/postfix-authrelay/private/dovecot-auth { # group = postfix # mode = 0666 # user = postfix # } } ssl = no ssl_cipher_list = ALL:!aNULL:!eNULL:!EXPORT:!DES:!3DES:!MD5:!PSK:!RC4:!ADH:!LOW@STRENGTH ssl_options = no_compression ssl_prefer_server_ciphers = yes userdb { driver = passwd }