[exim-cvs] Docs: clarify helo_allow_chars option

Gitweb: https://git.exim.org/exim.git/commitdiff/8748cff12e22ba27f9b52c87865e5d5a1340ec9e

Commit:     8748cff12e22ba27f9b52c87865e5d5a1340ec9e
Parent:     9d7795dba14939e2b743d8c3c4df81a5582b3092
Author:     Jeremy Harris <jgh146exb@???>
AuthorDate: Thu May 9 15:38:27 2024 +0100
Committer:  Jeremy Harris <jgh146exb@???>
CommitDate: Thu May 9 15:38:27 2024 +0100

    Docs: clarify helo_allow_chars option
---
 doc/doc-docbook/spec.xfpt | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt
index 35db1978d..dbbed7cde 100644
--- a/doc/doc-docbook/spec.xfpt
+++ b/doc/doc-docbook/spec.xfpt
@@ -16196,11 +16196,13 @@ set.
.cindex "EHLO" "underscores in"
.cindex "underscore in EHLO/HELO"
This option can be set to a string of rogue characters that are permitted in
-all EHLO and HELO names in addition to the standard letters, digits,
-hyphens, and dots. If you really must allow underscores, you can set
+non-ip-literal EHLO and HELO names in addition to the standard letters, digits,
+hyphens, and dots. For examplem if you really must allow underscores,
+you can set
.code
helo_allow_chars = _
.endd
+This option does not apply to names that look like ip-literals.
Note that the value is one string, not a list.



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