Re: Outlook rejecting messages because not RFC 5322 Compliant

["Naim\, Halim." <halimsrama@gmail.com>]

I think this is the relevan section (3.4) of the RFC:

----
|3.4.  Address Specification
|
|   Addresses occur in several message header fields to indicate senders
|   and recipients of messages.  An address may either be an individual
|   mailbox, or a group of mailboxes.
|
|   address         =   mailbox / group
|
|   mailbox         =   name-addr / addr-spec
|
|   name-addr       =   [display-name] angle-addr
|
|   angle-addr      =   [CFWS] "<" addr-spec ">" [CFWS] /
|                       obs-angle-addr
|
|   group           =   display-name ":" [group-list] ";" [CFWS]
|
|   display-name    =   phrase
|
|   mailbox-list    =   (mailbox *("," mailbox)) / obs-mbox-list
|
|   address-list    =   (address *("," address)) / obs-addr-list
|
|   group-list      =   mailbox-list / CFWS / obs-group-list
---

In the same section, there is a note:

----
|     Note: Some legacy implementations used the simple form where the
|      addr-spec appears without the angle brackets, but included the
|      name of the recipient in parentheses as a comment following the
|      addr-spec.  Since the meaning of the information in a comment is
|      unspecified, implementations SHOULD use the full name-addr form of
|      the mailbox, instead of the legacy form, to specify the display
|      name associated with a mailbox.  Also, because some legacy
|      implementations interpret the comment, comments generally SHOULD
|      NOT be used in address fields to avoid confusing such
|      implementations.
----

I believe the header being rejected does not conform to this syntax. I
may be wrong as I have no experience with reading RFCs.
The Note seems to describe this case.