Allegedly, on or about 30 April 2017, JD sent:
Gmail message below
====================================================
Message not delivered
There was a problem delivering your message to dpco(a)bol.net.in. See
the technical details below, or try resending in a few minutes.
The response was: 554 Communication dropped Harvest attack from this ip
Reporting-MTA: dns;
googlemail.com
Received-From-MTA: dns; jd1008(a)gmail.com
Arrival-Date: Sun, 30 Apr 2017 11:33:12 -0700 (PDT)
X-Original-Message-ID: <59062DE7.4090903(a)gmail.com>
Final-Recipient: rfc822; dpco(a)bol.net.in
Action: failed Status: 5.0.0
Remote-MTA: dns; mx1.bol.net.in. (203.94.248.193, the server for the domain bol.net.in.)
Diagnostic-Code: smtp; 554 Communication dropped Harvest attack from this ip
Last-Attempt-Date: Sun, 30 Apr 2017 11:33:14 -0700 (PDT)
I would say that it's the *recipient's* mail server that's complaining
about a "directory harvest attack" (that a server is flooding them with
messages written to all sorts of random addresses trying to find ones
that work).
It's confusing as to whether the complaint about it coming "from this
ip" refers to *your* IP (which is possible if your IP is spamming them,
if your IP is shared, or if they really mean from a range of IPs that
yours belongs to, but giving a vague error message), or whether it
refers to the IP of the SMTP server that you're sending through.
I'm guessing that you're sending through googlemail, the recipient is
telling googlemail that it thinks googlemail is spamming it (which it
could well be), and that googlemail is telling you it can't proceed to
send the message.
The error message said try again, so do that. And if you have another
mail service to use, try using it, instead.
It used to be things like Hotmail and Yahoo were the services to try and
send spam through, I suppose it's Google's turn to be exploited.
--
[tim@localhost ~]$ uname -rsvp
Linux 3.9.10-100.fc17.x86_64 #1 SMP Sun Jul 14 01:31:27 UTC 2013 x86_64
Boilerplate: All mail to my mailbox is automatically deleted, there is
no point trying to privately email me, I only get to see the messages
posted to the mailing list.
You can't have equality AND special treatment.