We are trying to configure our new Postfix mail server to allow relay for a
new remote client. Our configuration file currently includes the following
directive in main.cf:
smtpd_client_restrictions = permit_mynetworks,
check_client_access hash:/etc/postfix/client_access,
reject_unknown_client
All the remaining 'smtpd_' directives are default. The mail.log file shows
the attempt to send mail that should have been permitted.
Feb 1 10:17:23 mail-gr-oh postfix/smtpd[19051]: connect from
unknown[207.17.252.3]
Feb 1 10:17:23 mail-gr-oh postfix/smtpd[19051]: 87555337E2:
client=unknown[207.17.252.3]
Feb 1 10:17:23 mail-gr-oh postfix/smtpd[19051]: reject: RCPT from
unknown[207.17.252.3]: 554 <[EMAIL PROTECTED]>: Recipient address
rejected: Relay access denied; from=<[EMAIL PROTECTED]>
to=<[EMAIL PROTECTED]>
Feb 1 10:17:29 mail-gr-oh postfix/smtpd[19051]: disconnect from
unknown[207.17.252.3]
What configuration do we need to permit a specific external IP address to
relay from outside our network to any recipients without opening the server
for spammers?
Any guidance on this would be appreciated.
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