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-rw-r--r--mailutils/sendmail.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/mailutils/sendmail.c b/mailutils/sendmail.c
index f96ca3291..aa381c60f 100644
--- a/mailutils/sendmail.c
+++ b/mailutils/sendmail.c
@@ -293,7 +293,7 @@ int sendmail_main(int argc UNUSED_PARAM, char **argv)
continue; // N.B. Bcc: vanishes from headers!
}
}
- if (strchr(s, ':') || (list && isspace(s))) {
+ if (strchr(s, ':') || (list && isspace(s[0]))) {
// other headers go verbatim
// N.B. RFC2822 2.2.3 "Long Header Fields" allows for headers to occupy several lines.
// Continuation is denoted by prefixing additional lines with whitespace(s).