Sends this to your admin? https://docs.microsoft.com/en-us/microsoft-365/security/office-365-security/set-up-spf-in-office-365-to-help-prevent-spoofing?view=o365-worldwide On Mon, Apr 4, 2022 at 1:26 PM Krista <[log in to unmask]> wrote: > The admin tells me: > "As to fix the SPF signature and alignment settings we will need to add > all Microsoft production server IPs ( because this will keep changing ). > And Microsoft will not make that list available to us." > > "It is going to multiple MTAs (Message transport agents). In this case it > will start with the SMTP relay server which will forward the message to one > or more of the Hybrid exchange servers before it is routed via a nated IP > to Microsoft production servers where is will be inspected by EOP" > > On Mon, Apr 4, 2022 at 1:10 PM Sunil Chauhan <[log in to unmask]> wrote: > >> The server which talking to eop should be on the spf. >> >> If you listserv directly sending to eop, then the connecting up should be >> on spf. Or route via the mailrelay which I believe would be already on spf. >> >> On Mon, 4 Apr, 2022, 10:11 PM Krista, <[log in to unmask]> wrote: >> >>> Is this article still the most current on how to get ListServ to work >>> with O365 and not have messages being sent go into Junk? >>> >>> https://www.lsoft.com/news/techtipLSV-issue3-2015.asp >>> >>> Our ListServ is running on Windows and is on the Intranet of our >>> organization, which has switched to using O365 for email. We currently use >>> an SMTP relay. Messages that go to external addresses are fine, as the >>> ListServ's domain has an SPF record that contains the ESAs, but if a >>> message comes From the organization's main domain, from O365 to the >>> ListServ, and the subscribers have a mailbox on the org's main domain (in >>> O365), the messages takes a direct route to the microsoft production server >>> and EOP, so the SPF check fails, and ironically internal mail, going to the >>> listserv, then sent back to internal mail, gets tossed into subscriber's >>> junk folders. >>> >>> I'm not an exchange server engineer/Office 365 admin/engineer. I'm just >>> going based on what our engineer is telling me. >>> >>> If anyone has more up to date suggestions on how to work with O365 >>> (cloud) from an internal ListServ, please let me know. >>> >>> Krista Landon >>> >>> >>> >>> ------------------------------ >>> >>> To unsubscribe from the LSTSRV-L list, click the following link: >>> http://peach.ease.lsoft.com/scripts/wa-PEACH.exe?SUBED1=LSTSRV-L&A=1 >>> >> >> ------------------------------ >> >> To unsubscribe from the LSTSRV-L list, click the following link: >> http://peach.ease.lsoft.com/scripts/wa-PEACH.exe?SUBED1=LSTSRV-L&A=1 >> > > ------------------------------ > > To unsubscribe from the LSTSRV-L list, click the following link: > http://peach.ease.lsoft.com/scripts/wa-PEACH.exe?SUBED1=LSTSRV-L&A=1 > -- °(((=((===°°°(((================================================ ############################ To unsubscribe from the LSTSRV-L list: write to: mailto:[log in to unmask] or click the following link: http://peach.ease.lsoft.com/scripts/wa-PEACH.exe?SUBED1=LSTSRV-L&A=1