diff --git a/usr.sbin/sendmail/cf/mailer/smtp.m4 b/usr.sbin/sendmail/cf/mailer/smtp.m4
index 6b59574e61e4..bffa4d0201fb 100644
--- a/usr.sbin/sendmail/cf/mailer/smtp.m4
+++ b/usr.sbin/sendmail/cf/mailer/smtp.m4
@@ -46,10 +46,10 @@ POPDIVERT
 
 VERSIONID(`@(#)smtp.m4	8.32 (Berkeley) 11/20/95')
 
-Msmtp,		P=[IPC], F=CONCAT(mDFMuX, SMTP_MAILER_FLAGS), S=11/31, R=ifdef(`_ALL_MASQUERADE_', `21/31', `21'), E=\r\n, L=990,
+Msmtp,		P=[IPC], F=CONCAT(mDFMuX8, SMTP_MAILER_FLAGS), S=11/31, R=ifdef(`_ALL_MASQUERADE_', `21/31', `21'), E=\r\n, L=990,
 		_OPTINS(`SMTP_MAILER_MAX', `M=', `, ')_OPTINS(`SMTP_MAILER_CHARSET', `C=', `, ')T=DNS/RFC822/SMTP,
 		A=SMTP_MAILER_ARGS
-Mesmtp,		P=[IPC], F=CONCAT(mDFMuXa, SMTP_MAILER_FLAGS), S=11/31, R=ifdef(`_ALL_MASQUERADE_', `21/31', `21'), E=\r\n, L=990,
+Mesmtp,		P=[IPC], F=CONCAT(mDFMuXa8, SMTP_MAILER_FLAGS), S=11/31, R=ifdef(`_ALL_MASQUERADE_', `21/31', `21'), E=\r\n, L=990,
 		_OPTINS(`SMTP_MAILER_MAX', `M=', `, ')_OPTINS(`SMTP_MAILER_CHARSET', `C=', `, ')T=DNS/RFC822/SMTP,
 		A=ESMTP_MAILER_ARGS
 Msmtp8,		P=[IPC], F=CONCAT(mDFMuX8, SMTP_MAILER_FLAGS), S=11/31, R=ifdef(`_ALL_MASQUERADE_', `21/31', `21'), E=\r\n, L=990,