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Topic: Undelivered Mail Returned to Sender

Hello, i recently using relayhost with my ISP smtp as a relay, when i send mail to yahoo or another mail domain displays the following error in mail.log:

postfix/smtp[3701]: DD6882FBD1: to=<username@yahoo.es>, relay=smtp.relayhost.com[192.168.2.1]:25, delay=0.1, delays=0.05/0.03/0.01/0.01, dsn=5.7.1, status=bounced (host smtp.relayhost.com[192.168.2.1] said: 550 5.7.1 <username@yahoo.es>... Relaying denied. Proper authentication required. (in reply to RCPT TO command))

This is the output of my postfix configuration:

# postconf -n
alias_database = hash:/etc/postfix/aliases
alias_maps = hash:/etc/postfix/aliases
allow_min_user = no
append_dot_mydomain = no
biff = no
bounce_queue_lifetime = 1d
broken_sasl_auth_clients = yes
canonical_maps = hash:/etc/postfix/canonical
config_directory = /etc/postfix
content_filter = smtp-amavis:[127.0.0.1]:10024
delay_warning_time = 0h
disable_vrfy_command = yes
enable_original_recipient = no
home_mailbox = Maildir/
inet_interfaces = all
inet_protocols = ipv4
mail_name = iRedMail
mail_version = 0.6.0
mailbox_command = /usr/lib/dovecot/deliver
mailbox_size_limit = 15728640
maximal_backoff_time = 4000s
maximal_queue_lifetime = 1d
minimal_backoff_time = 300s
mydestination = $myhostname, localhost, localhost.localdomain, localhost.$myhostname
mydomain = domain.com
myhostname = server.domain.com
mynetworks = 127.0.0.0/8
mynetworks_style = subnet
myorigin = domain.com
proxy_read_maps = $canonical_maps $lmtp_generic_maps $local_recipient_maps $mydestination $mynetworks $recipient_bcc_maps $recipient_canonical_maps $relay_domains $relay_recipient_maps $relocated_maps $sender_bcc_maps $sender_canonical_maps $smtp_generic_maps $smtpd_sender_login_maps $transport_maps $virtual_alias_domains $virtual_alias_maps $virtual_mailbox_domains $virtual_mailbox_maps
queue_run_delay = 300s
readme_directory = no
recipient_bcc_maps = proxy:mysql:/etc/postfix/mysql_recipient_bcc_maps_domain.cf, proxy:mysql:/etc/postfix/mysql_recipient_bcc_maps_user.cf
recipient_delimiter = +
relay_domains = $mydestination, proxy:mysql:/etc/postfix/mysql_relay_domains.cf
relay_recipient_maps = proxy:mysql:/etc/postfix/mysql_virtual_mailbox_maps.cf
relayhost = smtp.relayhost.com
sender_bcc_maps = proxy:mysql:/etc/postfix/mysql_sender_bcc_maps_domain.cf, proxy:mysql:/etc/postfix/mysql_sender_bcc_maps_user.cf
smtp_sasl_password_maps = hash:/etc/postfix/sasl-passwords
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU)
smtpd_data_restrictions = reject_unauth_pipelining
smtpd_enforce_tls = no
smtpd_helo_required = yes
smtpd_helo_restrictions = permit_mynetworks,permit_sasl_authenticated, check_helo_access pcre:/etc/postfix/helo_access.pcre
smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination, reject_non_fqdn_helo_hostname, reject_invalid_helo_hostname, check_policy_service inet:127.0.0.1:10031
smtpd_reject_unlisted_recipient = yes
smtpd_reject_unlisted_sender = yes
smtpd_sasl_auth_enable = yes
smtpd_sasl_authenticated_header = no
smtpd_sasl_local_domain =
smtpd_sasl_path = dovecot-auth
smtpd_sasl_security_options =
smtpd_sasl_type = dovecot
smtpd_sender_login_maps = proxy:mysql:/etc/postfix/mysql_sender_login_maps.cf
smtpd_sender_restrictions = permit_mynetworks, reject_sender_login_mismatch, permit_sasl_authenticated
smtpd_tls_cert_file = /etc/ssl/certs/iRedMail_CA.pem
smtpd_tls_key_file = /etc/ssl/private/iRedMail.key
smtpd_tls_loglevel = 0
smtpd_tls_security_level = may
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtpd_use_tls = yes
tls_random_source = dev:/dev/urandom
transport_maps = proxy:mysql:/etc/postfix/mysql_transport_maps_user.cf, proxy:mysql:/etc/postfix/mysql_transport_maps_domain.cf
virtual_alias_maps = proxy:mysql:/etc/postfix/mysql_virtual_alias_maps.cf, proxy:mysql:/etc/postfix/mysql_domain_alias_maps.cf
virtual_gid_maps = static:1000
virtual_mailbox_base = /var/vmail
virtual_mailbox_domains = proxy:mysql:/etc/postfix/mysql_virtual_mailbox_domains.cf
virtual_mailbox_maps = proxy:mysql:/etc/postfix/mysql_virtual_mailbox_maps.cf
virtual_minimum_uid = 1000
virtual_transport = dovecot
virtual_uid_maps = static:1000

how to fix that ?

thanks...

Last edited by Jariel06 (2010-09-09 04:36:41)

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Re: Undelivered Mail Returned to Sender

(host smtp.relayhost.com[192.168.2.1] said: 550 5.7.1 <username@yahoo.es>... Relaying denied. Proper authentication required. (in reply to RCPT TO command))

Seems your ISP doesn't allow to relay your emails. You should contact ISP to get support first.

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Re: Undelivered Mail Returned to Sender

ZhangHuangbin wrote:

(host smtp.relayhost.com[192.168.2.1] said: 550 5.7.1 <username@yahoo.es>... Relaying denied. Proper authentication required. (in reply to RCPT TO command))

Seems your ISP doesn't allow to relay your emails. You should contact ISP to get support first.

I have a MDaemon mail server working properly. I am trying to migrate the MDaemon mail server to iRedMail, with MDaemon i can do relay to my ISP host with authentication, but not with iRedMail, i think i have something wrong in the configuration file, i have no idea what happens, any suggestions please?

thanks...

Last edited by Jariel06 (2010-09-10 06:19:30)

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Re: Undelivered Mail Returned to Sender

I beleive its relay isseu from your server to Your ISP server,you should ask your ISP to allow relay from your server to there server.

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Re: Undelivered Mail Returned to Sender

abhiz wrote:

I beleive its relay isseu from your server to Your ISP server,you should ask your ISP to allow relay from your server to there server.

I have already made contact with my ISP provider and he gave me a host (smtp.relayhost.com) and a user name and password of an account MultiPOP to do relay.

Then in the main.cf file:

relayhost = [smtp.relayhost.com]
smtp_sasl_password_maps = hash:/etc/postfix/sasl-passwd

in the /etc/postfix/sasl-passwd file:

[mail.example.com]           username:password

Then I made postmap to sasl-passwd file:

postmap hash:/etc/postfix/sasl-passwd

It does not work, still gives me the same error:

postfix/smtp[3701]: DD6882FBD1: to=<username@yahoo.es>, relay=smtp.relayhost.com[192.168.2.1]:25, delay=0.1, delays=0.05/0.03/0.01/0.01, dsn=5.7.1, status=bounced (host smtp.relayhost.com[192.168.2.1] said: 550 5.7.1 <username@yahoo.es>... Relaying denied. Proper authentication required. (in reply to RCPT TO command))

I do not know if I'm missing some configuration, or is that iRedMail does not allow relay to the ISP host with SMTP AUTH???

thanks in advance for the help...

Last edited by Jariel06 (2010-09-20 22:51:33)