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 NOTICE: (1) The foregoing is not intended to be a legally binding or legally effective electronic signature. (2) This message may contain legally privileged or confidential information. If you are not the intended recipient of this message, please so notify me, disregard the foregoing message, and delete the message immediately. I apologize for any inconvenience this may have caused. From: mailop <mailop-boun...@mailop.org> On Behalf Of Dima Gomonyk via mailop Sent: Friday, January 6, 2023 6:28 AM To: z...@stat.colostate.edu; mailop@mailop.org 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 clicking on links or attachments as they may not be safe. Never provide your username or password to a site you do not trust. Please forward suspicious e-mails to phish...@wth.org<mailto:phish...@wth.org>. 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. [52.37.233.84] or relay=vrz-mms.mx.a.cloudfilter.net. [35.169.108.175] but starting somewhere around 5pm MST, mail sent to vtext.com, vzwpix.com or mypixmessages.com is deferred: relay=smtpin02-mms.vzw.a.cloudfilter.net. [52.33.196.155], dsn=4.0.0, reply=421 vrz-ibgw-6003a.ext.cloudfilter.net 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<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> 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 [63.55.64.200] after first going through m04.vzwpix.com (unknown [63.59.66.15]) If anyone from Verizon or cloudfilter.net is listening, please advise. Cheers, Zube _______________________________________________ mailop mailing list mailop@mailop.org<mailto:mailop@mailop.org> https://list.mailop.org/listinfo/mailop<https://linklock.titanhq.com/analyse?url=https%3A%2F%2Flist.mailop.org%2Flistinfo%2Fmailop&data=eJxLtjUzSjQ3TTIxMTAwNExSS7EtL8nQyy9KV8u1NdSN9DBO8oy38E9PVSu2zU3MzMkv0E3KL81LTi1WNTGACIAVF9kWZSZnJBal6OUXJ-UX5aUCpWEGldpmlJQUFKsaO6oauQFRTmZxiR5CL1QkMy8tH8iEiAMAasMytg%25%25> -- -- 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<https://linklock.titanhq.com/analyse?url=https%3A%2F%2Fwww.smtp.com&data=eJxLtjUzSjQ3TTIxMTAwNExSS7EtL8nQyy9KV8u1NdSN9DBO8oy38E9PVSu2zU3MzMkv0E3KL81LTi1WNTGACIAVF9kWZSZnJBal6OUXJ-UX5aUCpWEGldpmlJQUFKsaO6oauQFReXm5XnFuSYFecn4uADtbKnQ%25> e: dmitry.gomo...@smtp.com<mailto:dmitry.gomon...@smtp.com> ________________________________ ________________________________ This email, its contents and attachments contain information from Ziff Davis, Inc. and/or its affiliates which may be privileged, confidential or otherwise protected from disclosure. The information is intended to be for the addressee(s) only. If you are not an addressee, any disclosure, copy, distribution or use of the contents of this message is prohibited. If you have received this email in error, please notify the sender by reply email and delete the original message and any copies.
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