Feb 18 14:03:49 mail postfix/smtpd[2795]: NOQUEUE: reject: RCPT from unknown[xxx.xxx.xxx.xxx]: 450 4.7.1 Client host rejected: cannot find your hostname, [xxx.xxx.xxx.xxx]; from=<*@aikkom.ru> to=<*@terletskiy.com.ru> proto=ESMTP helo=<NAM04-CO1-obe.outbound.protection.outlook.com>

inet_protocols = ipv4
smtpd_reject_unlisted_recipient = yes
smtpd_reject_unlisted_sender = yes
smtpd_helo_required = yes
smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination, reject_unknown_client, reject_unknown_client,reject_unverified_sender, reject_non_fqdn_sender

smtpd_client_restrictions = check_sender_access hash:/etc/postfix/whitelist, reject_unauth_destination,  reject_unknown_client

relay_domains = $mydestination

smtpd_sender_restrictions = reject_unknown_sender_domain, reject_non_fqdn_sender

#smtpd_sender_restrictions = check_sender_access hash:/etc/postfix/my_domains, reject 

smtpd_sasl_auth_enable = yes
smtpd_sasl_type = dovecot
smtpd_sasl_path = private/auth

Filesystem      Size  Used Avail Use% Mounted on
/dev/sda3       8.9G  8.2G  224M  98% /
tmpfs           939M     0  939M   0% /dev/shm
/dev/sda1       190M  101M   80M  56% /boot

Disk /dev/sda: 10.5 GB, 10510925824 bytes
255 heads, 63 sectors/track, 1277 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0004ac56

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1          26      204800   83  Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2              26          91      524288   82  Linux swap / Solaris
Partition 2 does not end on cylinder boundary.
/dev/sda3              91        1278     9534464   83  Linux