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-rw-r--r--software/email.page25
1 files changed, 23 insertions, 2 deletions
diff --git a/software/email.page b/software/email.page
index f749471..306bc15 100644
--- a/software/email.page
+++ b/software/email.page
@@ -6,8 +6,8 @@ offlineimap synchronization to maildir, notmuch indexing, mutt-kr client.
What I want when online:
-- instant (<1 seconds) email send
-- with MUA open, instant (<1 seconds) email receive (IMAP IDLE)
+- instant (less than 1 second) email send
+- with MUA open, instant (less than 1 second) email receive (IMAP IDLE)
- with MUA closed, regular (15 minute) imap synchronization, and single command
to quickly synchronize and send any queued messages
@@ -66,3 +66,24 @@ References:
* [write up of contemporary (2012) techniques](http://blog.phusion.nl/2012/09/10/mail-in-2012-from-an-admins-perspective/)
http://sealedabstract.com/code/nsa-proof-your-e-mail-in-2-hours/
+
+Postfix Domain Blacklist
+-------------------------
+
+At some point I started getting >= one spam message per second from a `qq.com`
+spoofer. I blacklisted that sender domain using
+[these directions](https://nacko.net/postfix-block-specific-from-specific-domains-centos-6-rhel-6/):
+
+Edit `/etc/postfix/sender_access`:
+
+ qq.com DISCARD
+
+Run:
+
+ sudo postmap /etc/postfix/sender_access
+
+Edit `/etc/postfix/main.cf`:
+
+ smtpd_sender_restrictions = check_sender_access hash:/etc/postfix/sender_access
+
+Restart postfix.