diff options
Diffstat (limited to 'src/src/transports/smtp.c')
| -rw-r--r-- | src/src/transports/smtp.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/src/transports/smtp.c b/src/src/transports/smtp.c index d7f251b0b..bbff1cad8 100644 --- a/src/src/transports/smtp.c +++ b/src/src/transports/smtp.c @@ -5312,6 +5312,17 @@ retry_non_continued: uschar *retry_message_key = NULL; uschar *serialize_key = NULL; + /* Deal slightly better with a possible Linux kernel bug that results + in intermittent TFO-conn fails deep into the TCP flow. Bug 2907 tracks. + Hack: Clear TFO option for any further hosts on this tpt run. */ + + if (total_hosts_tried > 0) + { + DEBUG(D_transport|D_acl|D_v) + debug_printf("Clearing TFO as not first host for message\n"); + ob->hosts_try_fastopen = US""; + } + /* Default next host is next host. :-) But this can vary if the hosts_max_try limit is hit (see below). It may also be reset if a host address is looked up here (in case the host was multihomed). */ |