Use \citetitle instead of \emph.

Doc/lib/libsmtplib.tex

@@ -11,8 +11,8 @@
 The \module{smtplib} module defines an SMTP client session object that
 can be used to send mail to any Internet machine with an SMTP or ESMTP
 listener daemon.  For details of SMTP and ESMTP operation, consult
-\rfc{821} (\emph{Simple Mail Transfer Protocol}) and \rfc{1869}
-(\emph{SMTP Service Extensions}).
+\rfc{821} (\citetitle{Simple Mail Transfer Protocol}) and \rfc{1869}
+(\citetitle{SMTP Service Extensions}).
 
 \begin{classdesc}{SMTP}{\optional{host\optional{, port}}}
 A \class{SMTP} instance encapsulates an SMTP connection.  It has
@@ -249,11 +249,11 @@ server.quit()
 
 
 \begin{seealso}
-  \seetext{Internet \rfc{821}, \emph{Simple Mail Transfer Protocol}.
+  \seetext{Internet \rfc{821}, \citetitle{Simple Mail Transfer Protocol}.
            Available online at
            \url{http://info.internet.isi.edu/in-notes/rfc/files/rfc821.txt}.}
 
-  \seetext{Internet \rfc{1869}, \emph{SMTP Service Extensions}.
+  \seetext{Internet \rfc{1869}, \citetitle{SMTP Service Extensions}.
            Available online at
            \url{http://info.internet.isi.edu/in-notes/rfc/files/rfc1869.txt}.}
 \end{seealso}