restrict trusted Postfix networks by default#387
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crazy-max merged 1 commit intoanonaddy:masterfrom May 2, 2026
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fixes #339
fixes #290
fixes #317
fixes #338
The default
mynetworksvalue is now loopback-only, andPOSTFIX_MYNETWORKScan be set explicitly for deployments that need trusted SMTP submitters.Trusting all RFC1918 ranges by default can make published SMTP ports behave like an open relay when Docker or a proxy presents external clients as private bridge addresses.