On 2018-07-31 08:22 AM, vinod mishra wrote:
There is chances of attack/spam through your Koha server, however gmail
always block such automated emails after some time as per my observation.
[snip]
On Tue, Jul 31, 2018 at 5:45 PM, Hira Akram <hira.ak...@almusnet.com> wrote:
I Checked and it is showing too many login attempts in log that’s why
google server has blocked emails from this account. In Gmail account, it is
showing too many random emails on invalid accounts. But I haven’t sent
these through Koha or anything. Is it possible that koha sent these emails
automatically??
This is not a Koha problem. Do you use DKIM and SPF? If so you can
*perhaps* contact gmail for a solution. See
<https://support.google.com/mail/answer/6227174>, specifically
"authentication domain".
In a nutshell, email deliverability to gmail is getting very complicated
-- they handle billions of pieces of email/day, and (since at least
2015) have radical protection/rejection practices after even the most
minor "sniff" of UBE -- and this could well not be *you* but some other
user in a bigger block of IP space that has a bad reputation.
Your logs show "(delivery temporarily suspended: connect to
smtp.gmail.com[74.125.24.109]:587: Connection timed out)" which looks
like tar-pitting. Unless you have an experienced email technician on
staff, you could have problems. Once your (or whoever owns your block of
IP space) "reputation" is hurt, it's not easy to get delisted.
Good luck -- Paul
[snip]
example is shown here.
---------
# tail -f /var/log/mail.log
Apr 28 11:20:03 gechlibrary postfix/smtpd[4449]: disconnect from
localhost[127.0.0.1]
Apr 28 11:20:32 gechlibrary postfix/smtp[4451]: connect to smtp.gmail.com
[74.125.24.108]:587: Connection timed out
Apr 28 11:20:32 gechlibrary postfix/smtp[4452]: connect to smtp.gmail.com
[74.125.24.109]:587: Connection timed out
Apr 28 11:21:02 gechlibrary postfix/smtp[4451]: 9BE0E7805B6: to=<
x...@gmail.com>, relay=none, delay=60, delays=0.12/0/60/0, dsn=4.4.1,
status=deferred (connect to smtp.gmail.com[74.125.24.109]:587: Connection
timed out)
Apr 28 11:21:03 gechlibrary postfix/smtp[4452]: connect to smtp.gmail.com
[74.125.24.108]:587: Connection timed out
Apr 28 11:21:03 gechlibrary postfix/smtp[4452]: C7A8F7805E6: to=<
x...@gmail.com>, relay=none, delay=60, delays=0.07/0.01/60/0, dsn=4.4.1,
status=deferred (connect to smtp.gmail.com[74.125.24.108]:587: Connection
timed out)
Apr 28 11:21:03 gechlibrary postfix/smtp[4453]: connect to smtp.gmail.com
[74.125.24.108]:587: Connection timed out
Apr 28 11:21:03 gechlibrary postfix/smtp[4453]: E4358780614: to=<
p...@gmail.com>, relay=none, delay=60, delays=0.07/0.01/60/0, dsn=4.4.1,
status=deferred (connect to smtp.gmail.com[74.125.24.108]:587: Connection
timed out)
firewall was blocked, and because of this reason, status = deferred was
appeared in mail log.
#mialq
18308780A2A 918 Sat Apr 28 10:40:03 root@localhost
(delivery temporarily suspended: connect to smtp.gmail.com[74.125.24.109]:587:
Connection timed out)
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