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fix: detect Mimecast South Africa, USB and Offshore MX regions #32

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Merged
Zacgoose merged 1 commit into from
Aug 24, 2026
Merged

fix: detect Mimecast South Africa, USB and Offshore MX regions #32

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2 changes: 1 addition & 1 deletion DNSHealth/MailProviders/Mimecast.json
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
{
"Name": "Mimecast",
"MxMatch": "(?<Prefix>[a-z]{2})-smtp-inbound-[0-9].mimecast.com",
"MxMatch": "^(?<Prefix>[a-z]{2,3})-smtp-inbound-[0-9]\\.mimecast\\.(?:com|co\\.za)",
"SpfInclude": "{0}._netblocks.mimecast.com",
"SpfReplace": [ "Prefix" ],
"Selectors": [],
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10 changes: 10 additions & 0 deletions DNSHealth/MailProviders/MimecastOffshore.json
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Original file line number Diff line number Diff line change
@@ -0,0 +1,10 @@
{
"Name": "Mimecast Offshore",
"MxMatch": "^(?<Prefix>[a-z]{2,3})-smtp-inbound-[0-9]\\.mimecast-offshore\\.com",
"SpfInclude": "",
"SpfReplace": [],
"Selectors": [],
"_MxComment": "https://community.mimecast.com/s/article/Connect-Application-Modifying-Your-MX-Records-673313100",
"_SpfComment": "Offshore (Jersey) region netblock include is not publicly documented; leave empty so no incorrect SPF include is asserted.",
"_DkimComment": "https://community.mimecast.com/s/article/DNS-Authentication-Configuration-Guide-345109074"
}
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