--- uip/post.c.orig	2015-08-18 17:54:48.000000000 +0000
+++ uip/post.c
@@ -87,6 +87,7 @@
     X("notls", TLSminc(-5), NTLSSW) \
     X("fileproc", -4, FILEPROCSW) \
     X("mhlproc", -3, MHLPROCSW) \
+    X("sendmail program", 0, MTSSM) \
     X("mts smtp|sendmail/smtp|sendmail/pipe", 2, MTSSW) \
     X("credentials legacy|file:filename", 0, CREDENTIALSSW) \
     X("messageid localname|random", 2, MESSAGEIDSW) \
@@ -473,6 +474,12 @@ main (int argc, char **argv)
 		    mhlproc = cp;
 		    continue;
 
+		case MTSSM:
+		    if (!(cp = *argp++) || *cp == '-')
+			adios (NULL, "missing argument to %s", argp[-2]);
+                    sendmail = cp;
+		    continue;
+
 		case MTSSW:
 		    if (!(cp = *argp++) || *cp == '-')
 			adios (NULL, "missing argument to %s", argp[-2]);
--- uip/send.c.orig	2015-08-18 17:54:48.000000000 +0000
+++ uip/send.c
@@ -69,6 +69,7 @@
     X("tls", TLSminc(-3), TLSSW) \
     X("initialtls", TLSminc(-10), INITTLSSW) \
     X("notls", TLSminc(-5), NTLSSW) \
+    X("sendmail program", 0, MTSSM) \
     X("mts smtp|sendmail/smtp|sendmail/pipe", 2, MTSSW) \
     X("messageid localname|random", 2, MESSAGEIDSW) \
 
@@ -256,6 +257,7 @@ main (int argc, char **argv)
 		case SASLMXSSFSW:
 		case USERSW:
 		case PORTSW:
+		case MTSSM:
 		case MTSSW:
 		case MESSAGEIDSW:
 		    vec[vecp++] = --cp;
--- uip/whatnowsbr.c.orig	2015-08-18 17:54:48.000000000 +0000
+++ uip/whatnowsbr.c
@@ -953,6 +953,7 @@ buildfile (char **argp, char *file)
     X("tls", TLSminc(-3), TLSSW) \
     X("initialtls", TLSminc(-10), INITTLSSW) \
     X("notls", TLSminc(-5), NTLSSW) \
+    X("sendmail program", 0, MTSSM) \
     X("mts smtp|sendmail/smtp|sendmail/pipe", 2, MTSSW) \
     X("messageid localname|random", 2, MESSAGEIDSW) \
 
@@ -1142,6 +1143,7 @@ sendit (char *sp, char **arg, char *file
 		case SASLMECHSW:
 		case USERSW:
 		case PORTSW:
+		case MTSSM:
 		case MTSSW:
 		case MESSAGEIDSW:
 		    vec[vecp++] = --cp;