fixes

[distro-setup] / mail-setup

diff --git a/mail-setup b/mail-setup
index 8f2a5c5f973fbecee46c5a113b34fbba73ae9d55..a684760c78a2f930bc6d30f0b93145847b7b254a 100755 (executable)
--- a/mail-setup
+++ b/mail-setup
@@ -2069,6 +2069,24 @@ EOF
 
     rm -fv /etc/dovecot/conf.d/20-lmtp.conf # file from prev version
     cat >>/etc/dovecot/local.conf <<EOF
+
+# /etc/dovecot/conf.d/10-master.conf says the default is 256M.
+# but I started getting oom errors in the syslog
+# Mar 27 15:10:04 sy dovecot[330088]: lmtp(iank)<3839880><gO/BDwtvBGaIlzoA7AdaJQ>: Fatal: master: service(lmtp): child 3839880 returned error 83 (Out of memory (service lmtp { vsz_limit=256 MB }, you may need to increase it) - set CORE_OUTOFMEM=1 environment to get core dump)
+# exim would just queue mail until it eventually succeeded.
+# Deciding what to increase it to, I found this
+# https://dovecot.org/list/dovecot/2011-December/080056.html
+# which suggests 3x the largest dovecot.index.cache file
+# and then I found that
+# md/l/testignore/dovecot.index.cache is 429M, my largest cache file,
+# but that folder only has 2k messages.
+# next biggest is md/l/qemu-devel/dovecot.index.cache 236M
+# which lead to me a search https://doc.dovecot.org/admin_manual/known_issues/large_cache/
+# which suggests 1.5x the maximum cache file size 1G, and
+# that I can safely rm the indix
+
+default_vsz_limit = 1500M
+
 # simple password file based login
 !include conf.d/auth-passwdfile.conf.ext