Considering how easy it is to get IPs blocked from every Verizon-owned
brand, because one single person sent the wrong email to SMS and tripped
a filter, and that you have to escalate to the CEO's team to get
unblocked, I don't know why anyone even rolls these dice anymore. I tell
everyone to use Twilio or Pushover if they want to get messages to
phones.
On 2023-01-06 09:15, chris via mailop wrote:
Yep this is intentional to coerce into pay to play
On Fri, Jan 6, 2023, 10:07 AM Osborne, Richard via mailop
<[email protected]> wrote:
We have been seeing this also for about the last week. Our Verizon
reps are telling us we need to pay for their EMAG (Enterprise
Messaging) service to not get blocked.
Richard Osborne
Information Systems
West Tennessee Healthcare
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I apologize for any inconvenience this may have caused.
From: mailop <[email protected]> On Behalf Of Dima Gomonyk
via mailop
Sent: Friday, January 6, 2023 6:28 AM
To: [email protected]; [email protected]
Subject: Re: [mailop] verizon email-to-text gateway mail deferred
evening and night
Attention: This email originated from outside of West Tennessee
Healthcare. Always validate the sender's email address before
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forward suspicious e-mails to [email protected].
I've been looking into this exact thing yesterday: Verizon's
mail-to-sms gateways. Might have been going on a long time and I’m
just noticing.
No emails are accepted between 0:00 to 11:59 UTC time every day (the
deferrals during that time frame are a somewhat misleading AUP#CNCT
from Cloudflare)
Emails are accepted only between 12:00 to 23:59 UTC time every day.
12 UTC is 7 EST
So in my opinion this looks like an enforced “do not disturb” by
Verizon to ensure SMS delivery only between 7am to 7pm EST time -
during the "social hours" or whatnot. At least one other ESP I have
contact with has confirmed they're seeing exactly the same time
frames.
I'm not a fan of the somewhat unclear bounce/deferral string they're
returning but I don't think Coudflare is doing it on their own, it's
too clean of a cutoff time - probably a Verizon rule.
On 01/06/2023 02:22, Zube via mailop wrote:
This is new as the past few days and rather odd.
Mail sent through the Verizon email-to-text gateway is fine during
the day when the relay is:
relay=vrz-mms.mx.a.cloudfilter.net [1]. [52.37.233.84]
or
relay=vrz-mms.mx.a.cloudfilter.net [1]. [35.169.108.175]
but starting somewhere around 5pm MST, mail sent to vtext.com [2],
vzwpix.com [3] or mypixmessages.com [4] is deferred:
relay=smtpin02-mms.vzw.a.cloudfilter.net [5]. [52.33.196.155],
dsn=4.0.0, reply=421 vrz-ibgw-6003a.ext.cloudfilter.net [6]
Mail sent from gmail makes it through.
Sometime around 5am the following day, a resend of the mail makes
it through again, but then it's hitting one of the two other
servers
listed above.
I'm not the only one seeing this:
https://community.verizon.com/t5/Verizon-Messages/Vtext-messages-Severe-Delay/td-p/1240767/page/7
[7]
Going the other way, text-to-email seems to work fine and it
arrives from
(in one test) twbgohaavzwvcmta-c-nk-x-00-sms-02.vtext.com [8]
[63.55.64.200]
after first going through m04.vzwpix.com [9] (unknown
[63.59.66.15])
If anyone from Verizon or cloudfilter.net [10] is listening,
please
advise.
Cheers,
Zube
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--
Dima Gomonyk
_Email Deliverability&Abuse Specialist, SMTP_
Campaigner | iContact | SMTP
p:
877.705.9362
a:
2 Gurdwara Rd, Suite 300, Ottawa, Canada
w:
smtp.com [12] e: [email protected]
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Links:
------
[1] http://vrz-mms.mx.a.cloudfilter.net
[2] http://vtext.com
[3] http://vzwpix.com
[4] http://mypixmessages.com
[5] http://smtpin02-mms.vzw.a.cloudfilter.net
[6] http://vrz-ibgw-6003a.ext.cloudfilter.net
[7]
https://linklock.titanhq.com/analyse?url=https%3A%2F%2Fcommunity.verizon.com%2Ft5%2FVerizon-Messages%2FVtext-messages-Severe-Delay%2Ftd-p%2F1240767%2Fpage%2F7&data=eJw1jU8LwjAMxT_Ndmtpt27z0oMgogfxIAiepO3CVljX0Xbq_PTGfxDywi_vJUbWhWoqLQRjnOu8lffUUx-63ElOLrtS76-rYwd5lE7ZwU9E-3k0EDPBvuBjDjJY06vQUh-1DyPg-n9oln1KU8zKdVZssYx3bh5tWugNgn36kSJBnips5y8iB4hRdfgGUYJHIu4HyAkwBmQDg1reqZZMKLwQrKkbnCZ0oTQvE9JIig%25%25
[8] http://twbgohaavzwvcmta-c-nk-x-00-sms-02.vtext.com
[9] http://m04.vzwpix.com
[10] http://cloudfilter.net
[11]
https://linklock.titanhq.com/analyse?url=https%3A%2F%2Flist.mailop.org%2Flistinfo%2Fmailop&data=eJxLtjUzSjQ3TTIxMTAwNExSS7EtL8nQyy9KV8u1NdSN9DBO8oy38E9PVSu2zU3MzMkv0E3KL81LTi1WNTGACIAVF9kWZSZnJBal6OUXJ-UX5aUCpWEGldpmlJQUFKsaO6oauQFRTmZxiR5CL1QkMy8tH8iEiAMAasMytg%25%25
[12]
https://linklock.titanhq.com/analyse?url=https%3A%2F%2Fwww.smtp.com&data=eJxLtjUzSjQ3TTIxMTAwNExSS7EtL8nQyy9KV8u1NdSN9DBO8oy38E9PVSu2zU3MzMkv0E3KL81LTi1WNTGACIAVF9kWZSZnJBal6OUXJ-UX5aUCpWEGldpmlJQUFKsaO6oauQFReXm5XnFuSYFecn4uADtbKnQ%25
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