[mailop] Verizon vtext service, not including a Content-Disposition header on images?

2022-05-05 Thread Michael Peddemors via mailop
Just reported, thought I would post here.. "We've recently come across an issue whereby Verizon's vtext service was sending MMS/images to user emails without a 'Content-Disposition' header. " Now, curious as to people's perspective on the requirement to use that header.. some email clients

Re: [mailop] Sendinblue sending suspicious mails claiming to be from DEKA GreenVest

2022-05-05 Thread Simon Bressier via mailop
Hi Hans, We've identified and closed that sending account yesterday, that phishing variations were unfortunately not yet known on our side, we've already updated our models to prevent it from happening again. It has been a legitimate account that has been compromised, we're already working to

Re: [mailop] DMARC/TLSRPT to non-existing accounts/reflection and sender reputation

2022-05-05 Thread Alessandro Vesely via mailop
On Thu 05/May/2022 12:55:53 +0200 Bernardo Reino via mailop wrote: On Thu, 5 May 2022, Alessandro Vesely via mailop wrote: On Fri 29/Apr/2022 18:24:04 +0200 Bernardo Reino wrote:  On Fri, 29 Apr 2022, Tobias Fiebig via mailop wrote: This might be a bit of a theoretical attack thing, but

Re: [mailop] DMARC/TLSRPT to non-existing accounts/reflection and sender reputation

2022-05-05 Thread Bernardo Reino via mailop
On Thu, 5 May 2022, Alessandro Vesely via mailop wrote: On Fri 29/Apr/2022 18:24:04 +0200 Bernardo Reino wrote: On Fri, 29 Apr 2022, Tobias Fiebig via mailop wrote: This might be a bit of a theoretical attack thing, but looking over the bounces for my nightly outbound DMARC reports I

Re: [mailop] DMARC/TLSRPT to non-existing accounts/reflection and sender reputation

2022-05-05 Thread Alessandro Vesely via mailop
On Fri 29/Apr/2022 18:24:04 +0200 Bernardo Reino wrote: On Fri, 29 Apr 2022, Tobias Fiebig via mailop wrote: This might be a bit of a theoretical attack thing, but looking over the bounces for my nightly outbound DMARC reports I actually started to wonder about this; (Mostly because I am