alias and catch-all alias are both receiving the same message

[RyanM]

Sometime during the evening, a change or update may have occurred that updated the way exim routes some of our emails. Here is a copy of my /etc/valias file for one of the domains where is this occurring:

alias_1@domain_1.com: mailbox_1@other_server.com
alias_2@domain_1.com: mailbox_2@other_server.com
alias_3@domain_1.com: mailbox_3@other_server.com
*: tech_alias@third_server.com

When email arrives on the server for alias_1@domain_1.com, mailbox_1@other_server.com and tech_alias@third_server.com both get the email. Here is a sample from the exim_mainlog:

2007-12-11 04:05:59 1J21zz-00006K-HZ <= sender@off_server_domain.com H=mx223.postini.com (psmtp.com) [64.18.2.150] P=smtp S=5375 id=11973673860599XT992S@www.off_server_domain.com  
2007-12-11 04:06:02 1J21zz-00006K-HZ => mailbox_1@other_server.com <alias_1@domain_1.com> R=lookuphost T=remote_smtp H=mail.other_server.com [70.87.181.167] X=TLSv1:AES256-SHA:256 
2007-12-11 04:06:38 1J21zz-00006K-HZ => tech_alias@third_server.com <alias_1@domain_1.com> R=lookuphost T=remote_smtp H=mail.third_server.com [70.86.93.226] X=TLSv1:AES256-SHA:256
2007-12-11 04:06:38 1J21zz-00006K-HZ Completed

Any thoughts?