-Msuucp, P=UUCP_MAILER_PATH, F=CONCAT(mDFMhuU, UUCP_MAILER_FLAGS), S=12, R=22, M=100000,
- A=uux - -r -z -a$f -gC $h!rmail ($u)
+# old UUCP mailer
+Muucp, P=UUCP_MAILER_PATH, F=CONCAT(DFMhuU, UUCP_MAILER_FLAGS), S=12, R=22, M=UUCP_MAX_SIZE,
+ A=UUCP_MAILER_ARGS
+
+# smart UUCP mailer (handles multiple addresses)
+Msuucp, P=UUCP_MAILER_PATH, F=CONCAT(mDFMhuU, UUCP_MAILER_FLAGS), S=12, R=22, M=UUCP_MAX_SIZE,
+ A=UUCP_MAILER_ARGS
+
+ifdef(`_MAILER_smtp_',
+`# domain-ized UUCP mailer
+Muucp-dom, P=UUCP_MAILER_PATH, F=CONCAT(mDFMhu, UUCP_MAILER_FLAGS), S=11, R=21, M=UUCP_MAX_SIZE,
+ A=UUCP_MAILER_ARGS')