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docmatt

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Hello all,

I'm currently trying to configure my postfix serveur as a relay to kerio serveur.
Here is my main.cf:
relayhost = [mail.domain.com]:587
smtp_sasl_auth_enable = yes
smtpd_sasl_auth_enable = yes
smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
smtp_sasl_security_options = noanonymous
smtp_use_tls = yes
smtp_sasl_mechanism_filter = digest-md5
smtp_tls_CAfile = /etc/ssl/certs/ca-bundle.crt


And here the error log:
Mar  7 13:43:20 Monitoring postfix/postfix-script[25926]: refreshing the Postfix mail system
Mar  7 13:43:20 Monitoring postfix/master[20883]: reload -- version 2.6.6, configuration /etc/postfix
Mar  7 13:43:22 Monitoring postfix/pickup[25931]: E786E142522: uid=0 from=<root>
Mar  7 13:43:22 Monitoring postfix/cleanup[25938]: E786E142522: message-id=<20160307124322.E786E142522<_at_>Monitoring.localdomain >
Mar  7 13:43:22 Monitoring postfix/qmgr[25932]: E786E142522: from=<root<_at_>Monitoring.localdomain>, size=475, nrcpt=1 (queue active)
Mar  7 13:43:23 Monitoring postfix/smtp[25940]: E786E142522: to=<exemple<_at_>domain.com>, relay=mail.domain.com[xx.xx.xx.xx]:587, delay=0.2, delays=0.03/0.05/0.11/0.01, dsn=5.7.1, status=bounced (host mail.domain.com[xx.xx.xx.xx] said: 550 5.7.1 Authentication Required (in reply to MAIL FROM command))
Mar  7 13:43:23 Monitoring postfix/cleanup[25938]: 25D3E142534: message-id=<20160307124323.25D3E142534<_at_>Monitoring.localdomain >
Mar  7 13:43:23 Monitoring postfix/bounce[25942]: E786E142522: sender non-delivery notification: 25D3E142534
Mar  7 13:43:23 Monitoring postfix/qmgr[25932]: 25D3E142534: from=<>, size=2439, nrcpt=1 (queue active)
Mar  7 13:43:23 Monitoring postfix/qmgr[25932]: E786E142522: removed
Mar  7 13:43:23 Monitoring postfix/local[25943]: 25D3E142534: to=<root<_at_>Monitoring.localdomain>, relay=local, delay=0.02, delays=0/0.01/0/0.01, dsn=2.0.0, status=sent (delivered to mailbox)
Mar  7 13:43:23 Monitoring postfix/qmgr[25932]: 25D3E142534: removed


I have filled /etc/postfix/sasl_passwd
with
mail.domain.comĀ  user<_at_>domain.com:Password


Any idea?

[Updated on: Mon, 07 March 2016 13:51]

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Brian (GFI/Kerio)

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This is due to the sender anti-spoofing policy. You can make an exception for the IP address of your postfix server. See this link for more details http://kb.kerio.com/product/kerio-connect/server-configurati on/security/configuring-anti-spoofing-in-kerio-connect-1491. html

Brian Carmichael
Instructional Content Architect
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