diff options
| -rw-r--r-- | mailutils/sendmail.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/mailutils/sendmail.c b/mailutils/sendmail.c index defbd95..4ca91fa 100644 --- a/mailutils/sendmail.c +++ b/mailutils/sendmail.c @@ -150,7 +150,13 @@ static char *sane_address(char *str) trim(str); s = str; while (*s) { - if (!isalnum(*s) && !strchr("+_-.@", *s)) { + /* Standard allows these chars in username without quoting: + * /!#$%&'*+-=?^_`{|}~ + * and allows dot (.) with some restrictions. + * I chose to only allow a saner subset. + * I propose to expand it only on user's request. + */ + if (!isalnum(*s) && !strchr("=+_-.@", *s)) { bb_error_msg("bad address '%s'", str); /* returning "": */ str[0] = '\0'; |