Spam Filter ISP Forums : Spam Filter ISP with Office 365 https://www.logsat.com/spamfilter/forums/ Fri, 06 Mar 2026 16:36:18 +0000 Tue, 20 Jul 2021 20:43:22 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 11.04 360 https://www.logsat.com/spamfilter/forums/RSS_post_feed.asp?TID=7172 <![CDATA[Spam Filter ISP Forums]]> https://www.logsat.com/spamfilter/forums/forum_images/web_wiz_forums.png https://www.logsat.com/spamfilter/forums/ <![CDATA[Spam Filter ISP with Office 365 : Usually Outlook would return some...]]> https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=7172&PID=14959&title=spam-filter-isp-with-office-365#14959 Author: yapadu
Subject: 7172
Posted: 20 July 2021 at 8:43pm

Usually Outlook would return some type of error, strange the Spamfilter is just saying it was disconnected.

You will need to grant exceptions to allow mail to the Office 365 connectors, as you will be violating SPF & DMARC rules of sending domains when you accept, process & forward mail direct to Office 365.

SPF & DMARC are designed specifically to prevent what you are doing - acting as a man in the middle.
]]> Tue, 20 Jul 2021 20:43:22 +0000 https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=7172&PID=14959&title=spam-filter-isp-with-office-365#14959 <![CDATA[Spam Filter ISP with Office 365 : Hi Belvoir,The destination mail...]]> https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=7172&PID=14958&title=spam-filter-isp-with-office-365#14958 Author: ik8sqi
Subject: 7172
Posted: 09 July 2021 at 10:02pm

Hi Belvoir,

The destination mail server where you're forwarding the emails to needs to be configured to whitelist your SpamFilter's IP address, or many emails will indeed be blocked. Here's an example.

Supposed your SpamFilter receives an email from joe@gmail.com to mike@tradaweb.com.uk, and the destination SMTP server for your domain tradaweb.com.uk is xxxxxxxxx.mail.protection.outlook.com.

Google has an SPF record in the gmail.com DNS that specifies which IPs/hosts are authorized to send emails from @gmail.com. Your SpamFilter's IP is certainly not in that list of authorized IPs... So when xxxxxxxxx.mail.protection.outlook.com receives an email from joe@gmail.com forwarded to it from your SpmFilter, it will reject it because your SpamFilter's IP is not authorized by google to send emails from @gmail.com.

This is just one scenario - there could be other reasons like rate limiters that outlook.com applies for example.
]]> Fri, 09 Jul 2021 22:02:29 +0000 https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=7172&PID=14958&title=spam-filter-isp-with-office-365#14958 <![CDATA[Spam Filter ISP with Office 365 : Are there any special consideratiuons...]]> https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=7172&PID=14957&title=spam-filter-isp-with-office-365#14957 Author: Belvoir
Subject: 7172
Posted: 09 July 2021 at 11:49am

Are there any special consideratiuons that I need to be aware of when using Spam Filter ISP Enterprise version when forwarding emails to an Office 365 client - I just cannot get it to work.

In the logfile, it always says "The remote host (xxxxxxxxx.mail.protection.outlook.com:25) disconnected us, - message queued - help@yyyyyyyyyyyyyyyy.com to: zzzzzzzzzzzzzzzz@xxxxxxxxxxxx"

I'm tearing out what little hair I have left  LOL !!!!   BTW, I'm using SpamFilter for ISP v 4.7.2.184 Enterprise

Thanks for your help
]]> Fri, 09 Jul 2021 11:49:29 +0000 https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=7172&PID=14957&title=spam-filter-isp-with-office-365#14957