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.