On Monday 10 June 2002 07:22 pm, you wrote: > 450 > � � Client host rejected: cannot find your hostname postfix - reject_unknown_hostname: reject HELO hostname without DNS A or MX record.
I have a lot to learn about postfix but so far I am impressed. According to Webmin the HELO options are: This parameter specifies optional restrictions on what SMTP clients can send in SMTP HELO and EHLO commands. The default is to permit everything. The following restrictions are available: permit_mynetworks: permit if the client address matches $mynetworks. reject_unknown_client: reject the request if the client hostname is unknown. reject_maps_rbl: reject if the client is listed under $maps_rbl_domains. reject_invalid_hostname: reject HELO hostname with bad syntax. reject_unknown_hostname: reject HELO hostname without DNS A or MX record. reject_non_fqdn_hostname: reject HELO hostname that is not in FQDN form check_helo_access maptype:mapname: look up HELO hostname or parent domains. Reject if result is REJECT or "[45]xx text". Permit otherwise. check_client_access maptype:mapname: see smtpd_client_restrictions. reject: reject the request. Place this at the end of a restriction. permit: permit the request. Place this at the end of a restriction. Restrictions are applied in the order as specified; the first restriction that matches wins. Specify a list of restrictions, separated by commas and/or whitespace. Continue long lines by starting the next line with whitespace. Jim Tarvid
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