Re: [mailop] Office365: only accepts messages from people in its organization or on its allowed senders list

This is a very common issue we see. Best action is to notify an individual at said company and let them escalate. Many times, they will fix it and issue get resolved. Thanks, Michael Irvine | Network Lead Great Computer Solutions O: 847-763-0763 | M: 224-435-6331 E: m...@greatsys.com

Re: [mailop] Verifying receipients?

On Fri, Feb 16, 2024 at 3:56 PM Bill Cole via mailop wrote: > > What is this current attitude on using something like > > Postfix's `reject_unverified_recipient`? > > ONLY use this when you are relaying for specific domains that you > service where you do not have any way to obtain a definitive us

Re: [mailop] Office365: only accepts messages from people in its organization or on its allowed senders list

Hi > As the list is restricted, that’s pretty poor business practice - “We expect > you to reply to this message, but you can’t, and here’s why!” Yes, this is exactly what we get... From: noreply@... CC: ms-peering-updates@... Subject: BGP Peering AS8075, Request to increase prefix filter Plea

Re: [mailop] Office365: only accepts messages from people in its organization or on its allowed senders list

On 20 Feb 2024, at 11:40, Andre van Eyssen via mailop wrote: > The second word is the key. Pretty standard -- this is a group distribution > list that explodes to a larger set of recipients and you can't use it because > you're not on the whitelist. So whilst the distribution group configuratio

Re: [mailop] Office365: only accepts messages from people in its organization or on its allowed senders list

On Tue, 20 Feb 2024, Benoit Panizzon via mailop wrote: The group [USERPART OF EMAIL] only accepts messages from people in its organization or on its allowed senders list, and your email address isn't on the list. The second word is the key. Pretty standard -- this is a group distribution list

Re: [mailop] !! Increase in outlook.com S3150 rejections

Hello, we had similar issues, sometimes with IP addresses that have NOT been sending emails for months. Approx. one month ago we registered all the IP addresses with SNDS (Smart Network Data Service) *and* JMRP (Junk Mail Reporting Program). Paying great attention to each complaint. The block

Re: [mailop] Office365: only accepts messages from people in its organization or on its allowed senders list

On Tue, 20 Feb 2024 at 11:25, Benoit Panizzon via mailop wrote: > > Hi List > > Maybe somebody could enlighten me, what is going on > > We very often face the issue of Office365 business customers sending an > email to us and asking for reply, but when we reply we get: > > === schnip === > You

[mailop] Office365: only accepts messages from people in its organization or on its allowed senders list

Hi List Maybe somebody could enlighten me, what is going on We very often face the issue of Office365 business customers sending an email to us and asking for reply, but when we reply we get: === schnip === Your message to [RECIPIENT] couldn't be delivered. The group [USERPART OF EMAIL] onl