acl_smtp_helo = helo
SECTION(acl, misc)m4_dnl
helo:
+ ## Don't worry if this is local submission. MUAs won't necessarily
+ ## have a clear idea of their hostnames. (For some reason.)
+ accept condition = ${if !eq{$acl_c_mode}{submission}}
+
## Check that the caller's claimed identity is actually plausible.
## This seems like it's a fairly effective filter on spamminess, but
## it's too blunt a tool. Rather than reject, add a warning header.
## Remember to apply submission controls.
warn set acl_c_mode = submission
+ control = no_enforce_sync
## Done.
accept
### Retry configuration.
SECTION(retry, default)m4_dnl
+## Be persistent when sending to the site relay. It ought to work, but
+## particularly satellites such as laptops often encounter annoying temporary
+## failures due to network unavailability, and the usual gradual policy can
+## leave mail building up for no good reason.
+CONF_smarthost * \
+ F,4d,15m
+
## Default.
* * \
F,2h,15m; G,16h,2h,1.5; F,4d,6h