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ZMS-165 #42

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merged 3 commits into from
Aug 8, 2024
Merged

ZMS-165 #42

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17d3763
given private network default to SPF neutral
NickOvt Aug 8, 2024
23f0596
change neutral to softfail, add custom message
NickOvt Aug 8, 2024
3355d0c
fix comment
NickOvt Aug 8, 2024
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13 changes: 12 additions & 1 deletion lib/auth.js
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Original file line number Diff line number Diff line change
Expand Up @@ -23,14 +23,25 @@ async function hookMail(plugin, connection, params) {
let spfResult;

try {
const isRemotePrivate = connection.remote.is_private;

spfResult = await checkSpf({
resolver: plugin.resolver,
ip: connection.remote.ip, // SMTP client IP
ip: isRemotePrivate ? undefined : connection.remote.ip, // SMTP client IP (undefined for if remote is private network)
helo: connection.hello?.host, // EHLO/HELO hostname
sender: txn.notes.sender, // MAIL FROM address
mta: connection.local?.host, // MX hostname
maxResolveCount: plugin.cfg?.auth?.dns?.maxLookups
});

if (isRemotePrivate) {
// given undefined IP as client IP in case client is from remote IP, SPF will default to neutral, replace with softfail and custom message
spfResult.status.result = 'softfail';
spfResult.status.comment = 'cannot assess local addresses';
spfResult.header = `Received-SPF: softfail (cannot assess local addresses) client-ip=${connection.remote.ip};`;
spfResult.info = `spf=softfail (cannot assess local addresses)`;
}

txn.notes.spfResult = spfResult;
} catch (err) {
txn.notes.spfResult = { error: err };
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