How can I un-spam my domain while testing mailgun webhooks? - mailgun

Question

I managed to create all that code that creates mailgun webhooks plus many other things like record responses to local database.
During my tests I send emails to yahoo & gmail and of course - as you expected - I pressed a couple of times the spam button at my tablet's yahoo app to test and verify the events recorded with my code.
My problem is that now when I send to that yahoo address from the domain under test the email never reaches my inbox and at the logs I read:
4.7.0 [TSS04] Messages from 159.135.140.82 temporarily deferred due to user complaints - 4.16.55.1; see https://postmaster.verizonmedia.com/error-codes
See what mailgun reports:
{
"severity": "temporary",
"tags": [
"issue 1",
"newsletter",
"2020"
],
"mailing-list": {
"list-id": "xyz101.mail.mysite.com",
"sid": "1634752",
"address": "xyz101#mail.mysite.com"
},
"storage": {
"url": "https://storage.eu.mailgun.net/v3/domains/mail.mysite.com/messages/AgEFucSTB0eaifXAHzlNKbRoSH0IddfpZA==",
"key": "AgEFucSTB0eaifXAHzlNKbRoSH0IddfpZA=="
},
"delivery-status": {
"tls": true,
"mx-host": "mx-eu.mail.am0.yahoodns.net",
"attempt-no": 1,
"description": "",
"session-seconds": 0.39575695991516113,
"retry-seconds": 600,
"code": 421,
"message": "4.7.0 [TSS04] Messages from 159.135.140.82 temporarily deferred due to user complaints - 4.16.55.1; see https://postmaster.verizonmedia.com/error-codes",
"certificate-verified": true
},
"recipient-domain": "yahoo.co.uk",
"id": "D5IqK77PRA29RvULyzXLsw",
"campaigns": [],
"reason": "generic",
"user-variables": {
"id": "15"
},
"flags": {
"is-routed": false,
"is-authenticated": true,
"is-system-test": false,
"is-test-mode": false
},
"log-level": "warn",
"timestamp": 1604915932.781863,
"envelope": {
"transport": "smtp",
"sender": "sales#mail.mysite.com",
"sending-ip": "159.135.140.82",
"targets": "blah-blah-blah#yahoo.co.uk"
},
"message": {
"headers": {
"to": "cent C. <blah-blah-blah#yahoo.co.uk>",
"message-id": "20201109095852.1.8EC4631A16DA1C10#mail.mysite.com",
"from": "mysite <sales#mail.mysite.com>",
"subject": "test_MailGunHttpClient_send_from_real_domain_with_tags_with_tracking_opens_and_clicks_with_unsubscribe_enabled_and_with_recipient_variables_visible_to_webhooks_to_mailing_list_of_access_type_readonly"
},
"attachments": [],
"size": 2130
},
"recipient": "blah-blah-blah#yahoo.co.uk",
"event": "failed"
}
This message eventually will become severity: "permanent".
Any idea how I can reverse this behavior at yahoo servers not accepting my emails(*)?
(*) For another domain I setup at Mailgun I inspect deliverability as I haven't clicked the spam button for emails landed from that domain

Answer 1

Looks like your actions have had some repercussions, emails from one of our accounts using the same IP are blocked by Yahoo, Aol etc. And it started for no reason related to us, the recipients or the content of the emails (it is a paid newsletter).