Re: [mailop] Another very strange microsoft originated email??

2023-12-07 Thread Bill Cole via mailop
On 2023-12-07 at 16:20:23 UTC-0500 (Thu, 7 Dec 2023 13:20:23 -0800) Michael Peddemors via mailop is rumored to have said: For the record, the command line 'whois' tool is getting long in the tooth, and the maintainer isnt' really interested in updating the tools, database.. (We offered to

Re: [mailop] Another very strange microsoft originated email??

2023-12-07 Thread Michael Peddemors via mailop
For the record, the command line 'whois' tool is getting long in the tooth, and the maintainer isnt' really interested in updating the tools, database.. (We offered to help) But, because I end up showing this to our own staff, a little trick.. whois 49.13.172.216 -h whois.ripe.net You CAN

Re: [mailop] Another very strange microsoft originated email??

2023-12-07 Thread Atro Tossavainen via mailop
On Thu, Dec 07, 2023 at 12:44:58PM -0800, Randolf Richardson, Postmaster via mailop wrote: > I'm not familiar with Hertzner, but APNIC's WHOIS indicates a > country code of ZZ for the sending IP address's netblock, which the > ISO lists as "Unknown or unspecified country." The descr:

Re: [mailop] Another very strange microsoft originated email??

2023-12-07 Thread Randolf Richardson, Postmaster via mailop
I'm not familiar with Hertzner, but APNIC's WHOIS indicates a country code of ZZ for the sending IP address's netblock, which the ISO lists as "Unknown or unspecified country." I guess the whole /23 is in the process of being moved? The most recent modification seems to be ~7

Re: [mailop] Mimecast - Increased greylisting/rate-limiting

2023-12-07 Thread Michael Rathbun via mailop
On Thu, 7 Dec 2023 17:35:38 +0200, Stephan Fourie via mailop wrote: >Anyone else seeing the same issue? Or, can offer some advice? A large number of the clients I monitor daily are seeing this regularly. The mail eventually goes through. mdr ___

[mailop] Mimecast - Increased greylisting/rate-limiting

2023-12-07 Thread Stephan Fourie via mailop
Hi everyone, Is there perhaps a Mimecast rep on the list? We're seeing increased temp rejections from Mimecast across 3 geographically separated email clusters ie. many different mail servers and IP ranges. The message in the logs is the generic temp reject: 451 Internal resource temporarily