Changing Reply Addresses

[rleamey]

I have several users who are having an issue with reply addresses. User is
A, recipients are B, C, D, and E.

A sends to B, C, D, and E
C replies to all
A replies to all and mail goes to D and E but does not go to B and C. They
do not go through because the email address has changed to B@some company.com
and C@so meothercom pany.com so the system then shows email in queues for
B@some, company.com, and pany.com. Generally, the partials go to our domain
as C@[email protected], (e-mail address removed).

It is confined to just a few users on our end. It mostly, but not always
seems to happen with the same companies. Also, today our domain was appended
to one of the partial addresses firstname.lastname@somecompany.

Any ideas?

 

[F.H. Muffman]

I have several users who are having an issue with reply addresses.

User is A, recipients are B, C, D, and E.

A sends to B, C, D, and E
C replies to all
A replies to all and mail goes to D and E but does not go to B and C.
They do not go through because the email address has changed to B@some
company.com
and C@so meothercom pany.com so the system then shows email in queues
for B@some, company.com, and pany.com. Generally, the partials go to our
domain as C@[email protected], (e-mail address removed).
It is confined to just a few users on our end. It mostly, but not
always seems to happen with the same companies. Also, today our
domain was appended to one of the partial addresses
firstname.lastname@somecompany.

Any ideas?

What type of mail server? Lets start with that.

 

[rleamey]

Exchange 2003. Email clients are Outlook 2003 and 2007