Hello, I received a note from the list manager complaining that our server has rejected an unconscionable number of message. Has there been some configuration change of the mailing list recently?
There are reasons for the rejections: our SPAM filter. 1. The filter found one set of messages being sent from a blocklisted site (23.83.215.44), and rejected the messages. 2. The filter uses a greylist to decide about the validity if a sender (nearly 2/3 of spam is rejected this way). The list does not retry delayed messages? This particular site (or IP range) is often blocklisted. $ host 23.83.215.44 44.215.83.23.in-addr.arpa domain name pointer crimson.oak.relay.mailchannels.net. ----[ sample of Blocklisted IP ]---- 2018-08-13_10:53:45 82822-18122 [Worker_1] [TLS-in] [TLS-out] [FromMissing] 23.83.215.44 <users-return-117706-jimoe=sohnen-moe....@httpd.apache.org> to: ji...@sohnen-moe.com [scoring] multiple (2) 'From:' header tags found ( DoNoFrom ) 2018-08-13_10:53:45 82822-18122 [Worker_1] [TLS-in] [TLS-out] [FromMissing] 23.83.215.44 <users-return-117706-jimoe=sohnen-moe....@httpd.apache.org> to: ji...@sohnen-moe.com [scoring] missing or invalid address in (2) 'From:' header tag(s) ( DoNoFrom ) 2018-08-13_10:53:45 82822-18122 [Worker_1] [TLS-in] [TLS-out] [DNSBL] 23.83.215.44 <users-return-117706-jimoe=sohnen-moe....@httpd.apache.org> to: ji...@sohnen-moe.com [spam found] (DNSBL, 74.6.131.124 listed in safe.dnsbl.sorbs.net) [Re users httpd Problem setting up ssl] -> /usr/local/bin/assp2/spam-yes/18122.eml; 2018-08-13_10:53:45 82822-18122 [Worker_1] [TLS-in] [TLS-out] 23.83.215.44 <users-return-117706-jimoe=sohnen-moe....@httpd.apache.org> to: ji...@sohnen-moe.com [SMTP Error] 554 5.7.1 DNS Blacklisted by safe.dnsbl.sorbs.net 2018-08-13_10:53:45 82822-18122 [Worker_1] [TLS-in] [TLS-out] 23.83.215.44 <users-return-117706-jimoe=sohnen-moe....@httpd.apache.org> to: ji...@sohnen-moe.com finished message - received DATA size: 10.95 kByte - sent DATA size: 0 Byte 2018-08-13_10:53:45 82822-18122 [Worker_1] [TLS-in] [TLS-out] 23.83.215.44 <users-return-117706-jimoe=sohnen-moe....@httpd.apache.org> to: ji...@sohnen-moe.com disconnected: session:7F62DD6BBCE0 23.83.215.44 - processing time 4 seconds 2018-08-13_10:53:45 [Worker_1] Worker_1 will sleep now ----[ end ]---- ----[ sample of greylisted response ]---- 2018-08-13_01:52:11 [Worker_1] Worker_1 wakes up 2018-08-13_01:52:11 [Worker_1] Connected: session:7F62FA585BC0 23.83.215.32:20236 > 192.168.69.246:25 > 192.168.69.246:125 2018-08-13_01:52:11 [Worker_1] 23.83.215.32 info: got STARTTLS request from 23.83.215.32 2018-08-13_01:52:12 50332-03786 [Worker_1] [TLS-in] [TLS-out] 23.83.215.32 <users-return-117704-jimoe=sohnen-moe....@httpd.apache.org> info: found message size announcement: 6.94 kByte 2018-08-13_01:52:12 50332-03786 [Worker_1] [TLS-in] [TLS-out] 23.83.215.32 <users-return-117704-jimoe=sohnen-moe....@httpd.apache.org> to: ji...@sohnen-moe.com recipient delayed: ji...@sohnen-moe.com 2018-08-13_01:52:12 50332-03786 [Worker_1] [TLS-in] [TLS-out] 23.83.215.32 <users-return-117704-jimoe=sohnen-moe....@httpd.apache.org> to: ji...@sohnen-moe.com [SMTP Status] 451 4.7.1 Please try again later - are you for real? 2018-08-13_01:52:12 50332-03786 [Worker_1] [TLS-in] [TLS-out] 23.83.215.32 <users-return-117704-jimoe=sohnen-moe....@httpd.apache.org> to: ji...@sohnen-moe.com disconnected: session:7F62FA585BC0 23.83.215.32 - processing time 1 seconds 2018-08-13_01:52:12 [Worker_1] Worker_1 will sleep now ----[ end ]---- -- James Moe moe dot james at sohnen-moe dot com 520.743.3936 Think.
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