Am 20.03.2014 17:01, schrieb mizuki: > I'm running Postfix-2.6.6 which is the version coming with latest Redhat6 and > we have firewall in between the > public network and campus so we have conduits 465 opened for sending emails > from outside networks. All mail clients > work fine except the mail clients made by Microsoft such as Windows Live Mail > & Mail App & Outlook Express & > Windows Outlook. Most of them can send emails fine from Campus network but > not from outside (Windows Outlook on Mac > will fail on both sending from public and campus network), all have the same > failing msgs in the server log with > '554 5.7.1 Relay Access Denied'
what about just configure the clients to use smtp-authentication? maybe some clients default to use smtp-auth with the same credentials as used for IMAP/POP3 but at the end of the day the admin/user which configures the client is repsonsible to verify that > But I do not understand why it will fail on different network because they are in "mynetworks" as long they are in your network mynetworks = 120.199.0.0/16, 192.168.0.0/16, 127.0.0.0/8, 10.2.0.0/16 smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated
