новичок, пытающийся использовать sendmail в первый раз. только сообщения о проблемах никогда не приходят (даже в спам). У меня есть следующие журналы:

mail.err пусто

mail.log показывает accepted for delivery но я также получаю stat=Deferred: Connection timed out with alt4.gmail-smtp-in.l.google.com иногда, но не всегда, поэтому не уверен, может ли это быть проблемой?

Я уже проверил, что порт 25 открыт с netstat -tuplen | grep 25

Mail.log:

Feb 17 16:57:16 mysite sendmail[1457]: w1HGvG6p001457:     to=myemail@gmail.com, ctladdr=www-data (33/33), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30423, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (w1HGvG8t001458 Message accepted for delivery)

Feb 17 17:00:09 mysite sm-mta[689]: w1HGiDDr003604: to=.   <myemail@gmail.com>, ctladdr=<www-data@mysite.com> (33/33), delay=00:15:56, xdelay=00:10:01, mailer=esmtp, pri=120652, relay=alt4.gmail-smtp-in.l.google.com. [74.125.28.26], dsn=4.0.0, stat=Deferred: Connection timed out with alt4.gmail-smtp-in.l.google.com.

mqueue файл выглядит так:

V8
T1518886636
K0
N0
P30652
Fbs
$_localhost [127.0.0.1]
$rESMTP
$smysite.com
${daemon_flags}
${if_addr}127.0.0.1
S<www-data@mysite.com>
A<>
rRFC822; myemail@gmail.com
RPFD:<mysite@gmail.com>
H?P?Return-Path: <�g>
H??Received: from mysite.com (localhost [127.0.0.1])
    by mysite.com (8.15.2/8.15.2/Debian-8) with ESMTP id w1HGvG8t001458
    for <mysite@gmail.com>; Sat, 17 Feb 2018 16:57:16 GMT
H?x?Full-Name: www-data
H??Received: (from www-data@localhost)
    by bikecomparator.com (8.15.2/8.15.2/Submit) id w1HGvG6p001457;
    Sat, 17 Feb 2018 16:57:16 GMT
H??Date: Sat, 17 Feb 2018 16:57:16 GMT
H??Message-Id: <201802171657.w1HGvG6p001457@mysite.com>
H??To: myemail@gmail.com
H??Subject: Signup | Verification
H??X-PHP-Originating-Script: 1000:userMgmt.php
H??From:noreply@mysite.com.com

netstat -ntlp | grep sendmail

tcp        0      0 127.0.0.1:25            0.0.0.0:*               LISTEN      687/sendmail: MTA:  
tcp        0      0 127.0.0.1:587           0.0.0.0:*               LISTEN      687/sendmail: MTA:  

хозяева 127.0.0.1 localhost mysite.com

горячее имя mysite.com

/etc/mail/sendmail.mc

define(`_USE_ETC_MAIL_')dnl
include(`/usr/share/sendmail/cf/m4/cf.m4')dnl
VERSIONID(`$Id: sendmail.mc, v 8.15.2-8 2016-12-08 18:43:49 cowboy Exp $')
OSTYPE(`debian')dnl
DOMAIN(`debian-mta')dnl
dnl # Items controlled by /etc/mail/sendmail.conf - DO NOT TOUCH HERE
undefine(`confHOST_STATUS_DIRECTORY')dnl        #DAEMON_HOSTSTATS=
dnl # Items controlled by /etc/mail/sendmail.conf - DO NOT TOUCH HERE
dnl #
dnl # General defines
dnl #
dnl # SAFE_FILE_ENV: [undefined] If set, sendmail will do a chroot()
dnl #   into this directory before writing files.
dnl #   If *all* your user accounts are under /home then use that
dnl #   instead - it will prevent any writes outside of /home !
dnl #   define(`confSAFE_FILE_ENV',             `')dnl
dnl #
dnl # Daemon options - restrict to servicing LOCALHOST ONLY !!!
dnl # Remove `, Addr=' clauses to receive from any interface
dnl # If you want to support IPv6, switch the commented/uncommentd  lines
dnl #
FEATURE(`no_default_msa')dnl
dnl DAEMON_OPTIONS(`Family=inet6, Name=MTA-v6, Port=smtp,     Addr=::1')dnl
DAEMON_OPTIONS(`Family=inet,  Name=MTA-v4, Port=smtp,      Addr=127.0.0.1')dnl
dnl DAEMON_OPTIONS(`Family=inet6, Name=MSP-v6, Port=submission, M=Ea, Addr=::1')dnl
DAEMON_OPTIONS(`Family=inet,  Name=MSP-v4, Port=submission, M=Ea,  Addr=127.0.0.1')dnl
dnl #
dnl # Be somewhat anal in what we allow
define(`confPRIVACY_FLAGS',dnl`needmailhelo,needexpnhelo,needvrfyhelo,restrictqrun,restrictexpand,nobodyreturn,authwarnings')dnl
dnl #
dnl # Define connection throttling and window length
define(`confCONNECTION_RATE_THROTTLE', `15')dnl
define(`confCONNECTION_RATE_WINDOW_SIZE',`10m')dnl
dnl #
dnl # Features
dnl #
dnl # use /etc/mail/local-host-names
FEATURE(`use_cw_file')dnl
dnl #
dnl # The access db is the basis for most of sendmail's checking
FEATURE(`access_db', , `skip')dnl
dnl #
dnl # The greet_pause feature stops some automail bots - but check  the
dnl # provided access db for details on excluding localhosts...
FEATURE(`greet_pause', `1000')dnl 1 seconds
dnl #
dnl # Delay_checks allows sender<->recipient checking
FEATURE(`delay_checks', `friend', `n')dnl
dnl #
dnl # If we get too many bad recipients, slow things down...
define(`confBAD_RCPT_THROTTLE',`3')dnl
dnl #
dnl # Stop connections that overflow our concurrent and time connection rates
FEATURE(`conncontrol', `nodelay', `terminate')dnl
FEATURE(`ratecontrol', `nodelay', `terminate')dnl
dnl #
dnl # If you're on a dialup link, you should enable this - so    sendmail
dnl # will not bring up the link (it will queue mail for later)
dnl define(`confCON_EXPENSIVE',`True')dnl
dnl #
dnl # Dialup/LAN connection overrides
dnl #
include(`/etc/mail/m4/dialup.m4')dnl
include(`/etc/mail/m4/provider.m4')dnl
dnl #
dnl # Default Mailer setup
MAILER_DEFINITIONS
MAILER(`local')dnl
MAILER(`smtp')dnl