>Jan 27 14:21:17 gumby postfix/smtpd[10429]: reject: RCPT from >unknown[63.240.114.196]: 554 Client host rejected: cannot find your >hostname, [63.240.114.196]; >==========
>Kodak has some webspace (possibly a web farm) in 63.240.114.0/23 and have >one customer trying to use them to send pictures via this webspace to one >of our users. > >I'm thinking its the reject_unknown_sender_domain restriction that is >causing this. no. it's failure to have a PTR match the A record > Would putting something like: > >smtpd_recipient_restrictions = > reject_unauth_pipelining, > reject_non_fqdn_sender, > reject_non_fqdn_recipient, > >>>>> check_sender_access hash:/etc/postfix/clients.map, <<<<<<<<<<<<<<< > reject_unknown_sender_domain, > reject_unknown_recipient_domain, > >Would this allow 63.240.114.0/23 to send mail? no, sender_access is the MAIL FROM:[EMAIL PROTECTED] you want to allow the IP in mta_clients_bw.map Len
