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| author | Denys Vlasenko | 2016-09-07 13:16:33 +0200 |
|---|---|---|
| committer | Denys Vlasenko | 2016-09-07 13:16:33 +0200 |
| commit | b9f56e82da9a0821011e1e0924acd1d781643070 (patch) | |
| tree | e6a5edcae1b4fb9365431690c80a892870f6735d /printutils/lpd.c | |
| parent | d42cdc2222d08fcc5ad8251ecf7a00454cb0c419 (diff) | |
| download | busybox-b9f56e82da9a0821011e1e0924acd1d781643070.zip busybox-b9f56e82da9a0821011e1e0924acd1d781643070.tar.gz | |
sendmail: make it possible to pause after connection helper is started
If a non-starttls helper is in use, initial 220 response is processed by us,
not by helper.
Some servers consider us to be a spammer if we don't wait for it.
It is not in protocol, but it is a real-life problem.
The workaround in this patch is a magic envvar, $SMTP_ANTISPAM_DELAY:
...
-H 'PROG ARGS' Run connection helper. Examples:
openssl s_client -quiet -tls1 -starttls smtp -connect smtp.gmail.com:25
openssl s_client -quiet -tls1 -connect smtp.gmail.com:465
$SMTP_ANTISPAM_DELAY: seconds to wait after helper connect
...
By using it, people can tweak sendmail behavior even if sendmail invocation
is buried in some scripts.
function old new delta
packed_usage 30464 30497 +33
sendmail_main 1185 1206 +21
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(add/remove: 0/0 grow/shrink: 2/0 up/down: 54/0) Total: 54 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'printutils/lpd.c')
0 files changed, 0 insertions, 0 deletions