.SH DESCRIPTION
.P
-We check the validity of an email address using three techniques:
+Validate an email address using three techniques:
.IP \[bu] 2
-We ensure that the length of local and domain parts is within the
+Ensuring that the length of local and domain parts is within the
RFC-specified limits.
.IP \[bu]
-A regular expression is used to check for invalid characters and syntax.
+A syntax check using a regular expression, or the full RFC 5322
+grammar (see the \fB\-\-rfc5322\fR option).
.IP \[bu]
-We confirm the existence of a MX record for the domain part of the
-address. This is not required; in fact many domains accept mail via
-an 'A' record for e.g. example.com which is used in lieu of an MX
-record. This behavior can be controlled via the \fR\-a\fR flag.
+Confirmation of the existence of an \fIMX\fR record for the domain
+part of the address. This is not required; in fact many domains accept
+mail via an \fIA\fR record for e.g. example.com which is used in lieu
+of an \fIMX\fR record. This behavior can be controlled via the
+\fR\-\-accept\-a\fR flag.
.P
These checks are performed in parallel using the number of available