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whitelist limit

gerg
Hi,

We're running 7.503 and sometimes we find that mail is rejected, especially when it comes from hotmail.  It's a big problem as many of our clients use hotmail!

While I work on diagnosing the issue I am considering exporting all of our clients email addresses and then importing them into the whitelist.

I was wondering if there is a limit to how many addresses can be added to the whitelist and if there is anything else I might need to consider?  We could be looking at 8000 email addresses!

Thanks in advance,

Greg


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  • 0
    No, I just meant "configure" - sorry about imprecise wording.

    If they are sending on a Hotmail account and doing it from an IP on an RBL, it would seem to me that it's real spam with a spoofed "From:" address.  It seems to me to be extremely unlikely that you would have more than one relationship where the IP is incorrectly listed in an RBL, but I suppose that's possible.

    Cheers - Bob
    PS Did you learn anything from the SMTP Log?
     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
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  • 0
    No, I just meant "configure" - sorry about imprecise wording.

    If they are sending on a Hotmail account and doing it from an IP on an RBL, it would seem to me that it's real spam with a spoofed "From:" address.  It seems to me to be extremely unlikely that you would have more than one relationship where the IP is incorrectly listed in an RBL, but I suppose that's possible.

    Cheers - Bob
    PS Did you learn anything from the SMTP Log?
     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
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