Chris, I don’t find that odd at all. I also suspect that because of the way the “btinternet.com” address space is split that the result when sending from webmail may vary depending on which

In the group I moderate (>2100 Subscribers) 182 have btinternet.com addresses and a further 8 have btconnect.com one. Dave w also wrote: … I suspect you have as much chance of getting it fixed as

Duane, One would hope so except It’s the UK equivalent of Ma Bell so its history is that it was the national government telephony provider. As such it created the rules as steps to prevent other

I would think a provider of that size would follow the RFCs. Duane

Chris, Yes it’s a single UK provider, however it’s the biggest UK mail provider, and as far as I can tell it has around 10 million customers…. Dave

I was involved in some of the original investigation into this phenomenon, but I genuinely believe that changing the format of Groups.io email addresses is not the way to go, at least for the moment.

Duane: Dave says that a dot is safe because dots are used by everybody and they ARE safe - I have one in my own email address. We know that + CAN be unsafe because we found a situation where it IS

When I need to see something in groups.io as a non-subscriber or non-logged-in user would view it I open an incognito window in my browser and type in groups.io For Firefox the shortcut is

Sharon, Maybe ignore my prior reply. In the bottom bar of every page is a link to the Features page (https://groups.io/static/features). Which may be more exactly what you wanted. Shal

Sharon, It may have seemed confusing to you, but the general Groups.io URL (https://groups.io/) shows the introductory page you want to someone not logged in: So the key to seeing what you're

The issue of which URL you're taken to vs. which URL you type in is a general problem in groups.io. I discovered only recently that of the URL's I had posted in my group as referrals to other cats

This morning, I tried to respond to a request for the best email discussion group provider with the address of Groups.io. It lead to much frustration. Every time I tried to go to a general page, I was

Sounds like that's going to extremes. Anything bad can happen at any time. Doesn't mean you avoid doing everything because it's not safe. -- J Messages are the sole opinion of the author,

Exactly. If they're not following the standard for one, what's to say they'll follow the standard for others? Why do you think that "." is safe? Since it's part of the same standard, it may not be

Duane, I folks are violating RFC2821 then they are not treating them the same. However, I think only “.” is safe.. Dave

If that's true, then it's not "safe" to use any punctuation in the local part. Per RFC 2821, they should all be treated the same. Duane

Lena: Its true that we have only found one mailserver with this bug so far, but the type of mailserver with this bug could appear in other locations and I don't think it is safe to continue using a +

Lena: This practice (of stripping the localpart after a +) may not be just happening at the single mailserver that we have found (synchronoss.net). .It may be a single TYPE of mailserver equipment

Not some hosts (plural), but single broken mailserver used by a part of BT users.

Scott, I would like the users of my group to be able to pay Groups.io directly. I don't want to accept donations because I suspect the donations would greatly surpass the premium cost for a year. If