22:59:13.614187 IP (tos 0x0, ttl 64, id 41982, offset 0, flags [DF], proto TCP (6), length 60)
xx.xx.xx.xx.40999 > 64.233.178.109.submission: Flags [S], cksum 0xf96a (incorrect -> 0x50ed), seq 157522949,
I can see the "msmtp" send email to gmail server directly, not via the proxy. So how can "msmtp" send