for fuzzing the imapserver and smtpserver use different config files than regular tests

otherwise they cannot be running at the same time, they could overwrite each
other's files.

testdata/imapserverfuzz/domains.conf

@@ -0,0 +1,15 @@
+Domains:
+	mox.example:
+		LocalpartCaseSensitive: false
+Accounts:
+	mjl:
+		Domain: mox.example
+		Destinations:
+			mjl@mox.example: nil
+		JunkFilter:
+			Threshold: 0.95
+			Params:
+				Twograms: true
+				MaxPower: 0.1
+				TopWords: 10
+				IgnoreWords: 0.1

testdata/imapserverfuzz/mox.conf

@@ -0,0 +1,15 @@
+DataDir: data
+User: 1000
+LogLevel: trace
+Hostname: mox.example
+Listeners:
+	local:
+		IPs:
+			- 0.0.0.0
+		IMAP:
+			Enabled: true
+			Port: 1143
+			NoRequireSTARTTLS: true
+Postmaster:
+	Account: mjl
+	Mailbox: postmaster

testdata/smtpserverfuzz/domains.conf

@@ -0,0 +1,17 @@
+Domains:
+	mox.example: nil
+	mox2.example: nil
+Accounts:
+	mjl:
+		Domain: mox.example
+		Destinations:
+			mjl@mox.example: nil
+			mjl@mox2.example: nil
+		JunkFilter:
+			Threshold: 0.9
+			Params:
+				Onegrams: true
+				MaxPower: 0.01
+				TopWords: 10
+				IgnoreWords: 0.1
+				RareWords: 2

testdata/smtpserverfuzz/mox.conf

@@ -0,0 +1,9 @@
+DataDir: data
+User: 1000
+LogLevel: trace
+Hostname: mox.example
+Postmaster:
+	Account: mjl
+	Mailbox: postmaster
+Listeners:
+	local: nil