Gitweb:
https://git.exim.org/exim.git/commitdiff/43a1dac4b63c228775d92cdc2861b6f1e76c6f1f
Commit: 43a1dac4b63c228775d92cdc2861b6f1e76c6f1f
Parent: f7ccf53fdc4edeb5e69073af531cc81d8e9ded5a
Author: Jeremy Harris <jgh146exb@???>
AuthorDate: Mon Jan 1 21:08:13 2024 +0000
Committer: Jeremy Harris <jgh146exb@???>
CommitDate: Mon Jan 1 21:08:13 2024 +0000
Docs: expand SRS info
---
doc/doc-docbook/spec.xfpt | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt
index 2c90ec5f3..493c094cd 100644
--- a/doc/doc-docbook/spec.xfpt
+++ b/doc/doc-docbook/spec.xfpt
@@ -42247,10 +42247,16 @@ The lookup will return the same result strings as can appear in
.subsection "SRS (Sender Rewriting Scheme)" SECTSRS
.cindex SRS "sender rewriting scheme"
+.cindex VERP "variable envelope return path"
SRS can be used to modify sender addresses when forwarding so that
SPF verification does not object to them.
-It operates by encoding the original envelope sender in a new
+It can also be used to identify a received bounce message as
+likely (or not) having been trigged by a message from the
+local system, and for identifying dead addresses in mailing lists.
+It is one implementation of a VERP (Variable Envelope Return Path) method.
+
+SRS operates by encoding the original envelope sender in a new
sender local part and using a domain run by the forwarding site
as the new domain for the sender. Any DSN message should be returned
to this new sender at the forwarding site, which can extract the
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