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Good afternoon:

Can someone please provide the IP address for the sender's email server, so that our IT Department may look into why we are all receiving the "Your emails are bouncing" messages?

(I'm pretty sure it's because our group is for Law Enforcement Personnel, which is causing the hiccup. We've added the groups.io page as a "safe" site to the firewall, but this is still happening.)

Thanks in advance.

Nicole

Nicole,

Can someone please provide the IP address for the sender's email
server, so that our IT Department may look into why we are all
receiving the "Your emails are bouncing" messages?

My service says it received your message from
web01.groups.io. [66.175.222.12]

But I have no reason to believe that Groups.io always sends from that same server. Nor any reason to believe that it doesn't either, I suppose.

The question is what header fields you email service uses, and how it uses them, when it decides whether to accept or reject an inbound email message. If they can apply a whitelist to the "envelope from" (aka Sender) address they should whitelist the groups.io domain.

We've added the groups.io page as a "safe" site to the firewall, but
this is still happening.

Safe for web access would not likely have any bearing on email delivery.

In your Subscription page you can look at the Email Delivery History tab, in the Recent Bounces section, to see what error code your email service gave to groups.io the last few times your service rejected a group posting.

That information would likely be useful to your IT department as well.

Shal


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Thanks.
I looked at our reason code, and it's showing: 5.3.4 smtp; 552 5.3.4 Message size exceeds fixed maximum message size

I'm going to contact IT to make sure there are no size restrictions in place.

Nicole