Problem with RBL

Question

I've started to experience a problem with legitimate mails being rejected from different companies. After investigating a bit have I found that what they have in common is that they are hosted at loopia.se, one of the larger hosting companies in Sweden. However when I check they are not blacklisted. I guess they get temporary blacklisted but it's still a bit frustrating having to add exceptions. Is it possible to create a more generic exception in the firewall without drowning in spam? I'm currently running SFOS 17.5.8 MR-8.

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Vishal_R · Answer

Hi MHQT 
 You may either add domain in "spam check exceptions" or you may create Anti Spam policy rule to whitelist that specific domain. SPAM check exceptions: XG in transparent proxy mode for email communication: For white-list rule settings would be similar to below KBA with XG ( that KBA is with reference to CR OS) : https://community.sophos.com/kb/en-us/130201 XG in MTA mode : https://community.sophos.com/kb/en-us/128049