General Questions • [Software] Postfix alias problem?

I installed and configured mail server on Debian 12 with Postfix (virtual users in mysql).
Everything is ok, until I needed an alias like alias@domain.com to direct emails to user1@domain.com and user2@domain.com.
From the other domain alias works ok, from my domains, with address like any_address@domain.com, with e-mail client (outlook, thunderbird...) any email sent to alias@domain.com returns the error "User doesn't exist: alias@domain.com". From Roundcube (localhost), from any_address@domain.com, any e-mail to alias@domain.com is ok.

My main.cf is:
queue_directory = /var/spool/postfix

# TLS parameters

smtpd_tls_cert_file = /etc/letsencrypt/live/domain.com/fullchain.pem
smtpd_tls_key_file = /etc/letsencrypt/live/domain.com/privkey.pem
smtpd_use_tls = yes
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache

myhostname = mail.domain.com
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = /etc/mailname
mydestination = $myhostname, mail.domain.com, localhost.domain.com, localhost
relayhost =
mynetworks = 127.0.0.0/8 217.external_IP/32 192.168.xx.0/24 [::ffff:127.0.0.0]/104 [::1]/128
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
inet_protocols = ipv4
html_directory = /usr/share/doc/postfix/html

home_mailbox = Maildir/
virtual_mailbox_base = /var/spool/mail
virtual_gid_maps = static:5000
virtual_minimum_uid = 5000
virtual_uid_maps = static:5000

maximal_queue_lifetime = 1h
bounce_queue_lifetime = 1h
maximal_backoff_time = 15m
minimal_backoff_time = 5m
queue_run_delay = 5m

tls_preempt_cipherlist = yes
tls_ssl_options = NO_COMPRESSION
tls_high_cipherlist = EDH+CAMELLIA:EDH+aRSA:EECDH+aRSA+AESGCM:EECDH+aRSA+SHA256:EECDH:+CAMELLIA128:+AES128:+SSLv3:!aNULL:!eNULL:!LOW:!3DES:!MD5:!EXP:!PSK:!DSS:!RC4:!SEED:!IDEA:!ECDSA:kEDH:CAMELLIA128-SHA:AES128-SHA

smtp_tls_security_level = dane
smtp_dns_support_level = dnssec
#smtp_tls_policy_maps = mysql:/etc/postfix/tls-policy.cf
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
smtp_tls_protocols = !SSLv2, !SSLv3
smtp_tls_ciphers = high
smtp_tls_CAfile = /etc/letsencrypt/live/domain.com/cert.pem

smtpd_tls_security_level = may
smtpd_tls_protocols = !SSLv2, !SSLv3
smtpd_tls_ciphers = high
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache

virtual_transport = lmtp:unix:private/dovecot-lmtp

smtpd_milters = inet:localhost:11332
non_smtpd_milters = inet:localhost:11332
milter_protocol = 6
milter_mail_macros = i {mail_addr} {client_addr} {client_name} {auth_authen}
milter_default_action = accept

smtpd_relay_restrictions = reject_non_fqdn_recipient
reject_unknown_recipient_domain
permit_mynetworks
reject_unauth_destination

smtpd_client_restrictions = permit_mynetworks
check_client_access hash:/etc/postfix/without_ptr
smtpd_helo_required = yes
smtpd_helo_restrictions = permit_mynetworks
reject_invalid_helo_hostname
reject_non_fqdn_helo_hostname
reject_unknown_helo_hostname

# Block clients, which start sending too early
smtpd_data_restrictions = reject_unauth_pipelining

mua_relay_restrictions = reject_non_fqdn_recipient,reject_unknown_recipient_domain,permit_mynetworks,permit_sasl_authenticated,reject
mua_sender_restrictions = permit_mynetworks,reject_non_fqdn_sender,reject_sender_login_mismatch,permit_sasl_authenticated,reject
mua_client_restrictions = permit_mynetworks,permit_sasl_authenticated,reject

### Postscreen Whitelist / Blocklist
postscreen_access_list = permit_mynetworks
cidr:/etc/postfix/postscreen_access
postscreen_blacklist_action = drop

# Drop connections if other server is sending too quickly
postscreen_greet_action = drop


### DNS blocklists
postscreen_dnsbl_threshold = 2
postscreen_dnsbl_sites = ix.dnsbl.manitu.net*2
zen.spamhaus.org*2
postscreen_dnsbl_action = drop

## MySQL queries

local_recipient_maps = $virtual_mailbox_maps
virtual_alias_maps = mysql:/etc/postfix/mysql_virtual_alias_maps.cf
virtual_mailbox_domains = mysql:/etc/postfix/mysql_virtual_domains_maps.cf
virtual_mailbox_maps = mysql:/etc/postfix/mysql_virtual_mailbox_maps.cf

### Maximum mailbox size (0=unlimited - is already limited by Dovecot quota)
mailbox_size_limit = 0

### Maximum size of inbound e-mails (50 MB)
message_size_limit = 52428800

### Do not notify system users on new e-mail
biff = no

### Users always have to provide full e-mail addresses
append_dot_mydomain = no

### Delimiter for "Address Tagging"
recipient_delimiter = +


Where is the problem?
Thanks!

Statistics: Posted by geosoft — 2025-01-09 16:22 — Replies 0 — Views 27

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