<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><span style="background-color: rgba(255, 255, 255, 0);">Hello All,</span><div><span style="background-color: rgba(255, 255, 255, 0);"><br></span></div><div><span style="background-color: rgba(255, 255, 255, 0);">I'm having a weird problem where RT can't send out going emails. I'm using Postfix and running sendmail command from the shell works fine, just whenever a new ticket gets created or a comment was added, RT is not able to send outgoing emails. </span></div><div><span style="background-color: rgba(255, 255, 255, 0);"><br></span></div><div><span style="background-color: rgba(255, 255, 255, 0);">On the web interface, it says:</span></div><div><span style="background-color: rgba(255, 255, 255, 0);">The RT System itself - Sending the previous mail has failed. Please contact your admin, they can find more details in the logs.</span></div><div><span style="background-color: rgba(255, 255, 255, 0);"><br></span></div><div><span style="background-color: rgba(255, 255, 255, 0);">In syslogs, the following error is thrown:</span></div><div><span style="background-color: rgba(255, 255, 255, 0);">Nov 7 09:04:30 *** postfix/sendmail[30696]: fatal: file /etc/postfix/<a href="http://main.cf/">main.cf</a>: parameter setgid_group: unknown group name: postdrop</span></div><div><span style="background-color: rgba(255, 255, 255, 0);"><br></span></div><div><span style="background-color: rgba(255, 255, 255, 0);">At first I thought a misconfigured postfix is causing the problem, but again I can run sendmail command from the shell and it sends out email with no problem. </span></div><div><span style="background-color: rgba(255, 255, 255, 0);"><br></span></div><div><span style="background-color: rgba(255, 255, 255, 0);">I do have the postdrop group in my /etc/group file.</span></div><div><span style="background-color: rgba(255, 255, 255, 0);"><br></span></div><div><span style="background-color: rgba(255, 255, 255, 0);">What's weird is there is no "setgid_group" in file /etc/postfix/<a href="http://main.cf/">main.cf</a>.</span></div><div><span style="background-color: rgba(255, 255, 255, 0);"><br></span></div><div><span style="background-color: rgba(255, 255, 255, 0);">Below is output of postconf -n:</span></div><div><span style="background-color: rgba(255, 255, 255, 0);"><br></span></div><div><span style="background-color: rgba(255, 255, 255, 0);">alias_database = hash:/etc/aliases</span></div><div><span style="background-color: rgba(255, 255, 255, 0);">alias_maps = hash:/etc/aliases</span></div><div><span style="background-color: rgba(255, 255, 255, 0);">append_dot_mydomain = no</span></div><div><span style="background-color: rgba(255, 255, 255, 0);">biff = no</span></div><div><span style="background-color: rgba(255, 255, 255, 0);">config_directory = /etc/postfix</span></div><div><span style="background-color: rgba(255, 255, 255, 0);">inet_interfaces = all</span></div><div><span style="background-color: rgba(255, 255, 255, 0);">inet_protocols = ipv4</span></div><div><span style="background-color: rgba(255, 255, 255, 0);">mailbox_size_limit = 0</span></div><div><span style="background-color: rgba(255, 255, 255, 0);">mydestination = [domain], [domain], localhost</span></div><div><span style="background-color: rgba(255, 255, 255, 0);">myhostname = [domain]</span></div><div><span style="background-color: rgba(255, 255, 255, 0);">mynetworks = <a href="http://127.0.0.0/8">127.0.0.0/8</a> [::ffff:127.0.0.0]/104 [::1]/128</span></div><div><span style="background-color: rgba(255, 255, 255, 0);">myorigin = /etc/mailname</span></div><div><span style="background-color: rgba(255, 255, 255, 0);">readme_directory = no</span></div><div><span style="background-color: rgba(255, 255, 255, 0);">recipient_delimiter = +</span></div><div><span style="background-color: rgba(255, 255, 255, 0);">relayhost = [some ip]</span></div><div><span style="background-color: rgba(255, 255, 255, 0);">smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache</span></div><div><span style="background-color: rgba(255, 255, 255, 0);">smtpd_banner = $myhostname ESMTP I.T., have you tried turning it off and on again?</span></div><div><span style="background-color: rgba(255, 255, 255, 0);">smtpd_client_restrictions = reject_rbl_client <a href="http://bl.spamcop.net/">bl.spamcop.net</a>, reject_unauth_pipelining, permit</span></div><div><span style="background-color: rgba(255, 255, 255, 0);">smtpd_data_restrictions = reject_unauth_pipelining, permit</span></div><div><span style="background-color: rgba(255, 255, 255, 0);">smtpd_helo_required = yes</span></div><div><span style="background-color: rgba(255, 255, 255, 0);">smtpd_helo_restrictions = reject_invalid_helo_hostname, reject_non_fqdn_helo_hostname, reject_unauth_pipelining, permit</span></div><div><span style="background-color: rgba(255, 255, 255, 0);">smtpd_recipient_restrictions = reject_non_fqdn_recipient, reject_unknown_recipient_domain, reject_unauth_destination, reject_unauth_pipelining, permit_auth_destination, permit_mynetworks</span></div><div><span style="background-color: rgba(255, 255, 255, 0);">smtpd_timeout = 30s</span></div><div><span style="background-color: rgba(255, 255, 255, 0);">smtpd_tls_cert_file = /etc/ssl/certs/ssl-cert-snakeoil.pem</span></div><div><span style="background-color: rgba(255, 255, 255, 0);">smtpd_tls_key_file = /etc/ssl/private/ssl-cert-snakeoil.key</span></div><div><span style="background-color: rgba(255, 255, 255, 0);">smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache</span></div><div><span style="background-color: rgba(255, 255, 255, 0);">smtpd_use_tls = yes</span></div><div><span style="background-color: rgba(255, 255, 255, 0);"><br></span></div><div><span style="background-color: rgba(255, 255, 255, 0);"><br></span></div><div><span style="background-color: rgba(255, 255, 255, 0);">I'm running RT 4.2.8 on a Debian Wheezy box with MySQL server. Anyone has any insight to my problem? Any suggestions is greatly appreciated!</span></div><div><span style="background-color: rgba(255, 255, 255, 0);"><br></span></div><div><div class="gmail_signature"><div dir="ltr"><span style="background-color: rgba(255, 255, 255, 0);">Livy</span><br></div></div></div></body></html>