Re: [mailop] Mimecast DKIM Sender Invalid

2024-10-20 Thread Florian Effenberger via mailop
Hello, Andy Beverley - Simplelists via mailop wrote on 19.10.24 at 22:03: I've taken a look at the historical emails, but unfortunately there doesn't seem to be any sort of reference number in them. I'd be happy to provide further details as required - feel free to reach out off-list. thank

Re: [mailop] SPF fragility vs. utility

2024-10-20 Thread Dave Crocker via mailop
On 10/18/2024 7:38 AM, Bill Cole via mailop wrote: The real original sender is preserved in the Reply-To here (and on most lists using Mailman today.) In other words, to get around DMARC fragility and false positive damage, an intermediary must 1. Break DMARC, by changing the rfc5322.From

Re: [mailop] SPF fragility vs. utility

2024-10-20 Thread Alessandro Vesely via mailop
On Sun 20/Oct/2024 04:17:22 +0200 Viktor Dukhovni wrote: On 20 Oct 2024, at 7:09 AM, Gellner, Oliver via mailop wrote: Apple Mail shows Reply-To headers. Not only by default, but always, you cannot hide them. The downside is that it does not show the email addresses but only the display name

Re: [mailop] who's the sender, was SPF fragility vs. utility

2024-10-20 Thread John Levine via mailop
According to Anthony Howe via mailop : >>> Thunderbird does show more than display names (unless I'm missing >>> something) ... >> >> In the message list it just shows the display name unless there is no >> display name, >> in which case it shows the address. >> >> When you open the message, it

Re: [mailop] SPF fragility vs. utility

2024-10-20 Thread Gellner, Oliver via mailop
On 20.10.2024 at 04:24 Viktor Dukhovni via mailop wrote:  > On 20 Oct 2024, at 7:09 AM, Gellner, Oliver via mailop > wrote: > > Apple Mail shows Reply-To headers. Not only by default, but always, you > cannot hide them. > The downside is that it does not show the email addresses but only the

Re: [mailop] SPF fragility vs. utility

2024-10-20 Thread Anthony Howe via mailop
On 2024-10-20 14:16, Alessandro Vesely via mailop wrote: On Sun 20/Oct/2024 04:17:22 +0200 Viktor Dukhovni wrote: On 20 Oct 2024, at 7:09 AM, Gellner, Oliver via mailop wrote: Apple Mail shows Reply-To headers. Not only by default, but always, you cannot hide them. The downside is that it do

Re: [mailop] SPF fragility vs. utility

2024-10-20 Thread John Levine via mailop
It appears that Anthony Howe via mailop said: >> Similar with Thunderbird. > >Thunderbird does show more than display names (unless I'm missing something) >... In the message list it just shows the display name unless there is no display name, in which case it shows the address. When you open

Re: [mailop] SPF fragility vs. utility

2024-10-20 Thread Anthony Howe via mailop
On 2024-10-20 15:12, John Levine via mailop wrote: It appears that Anthony Howe via mailop said: Similar with Thunderbird. Thunderbird does show more than display names (unless I'm missing something) ... In the message list it just shows the display name unless there is no display name, in