Mail Server

[Raj Har]

Hello all,
               I have configured sendmail as a MTA and* **SquirrelMail **as
a client software.
when i login from webmail it`s working fine(without giving relay error).but
when i use outlook as a client s/w it`s give error of relay.
can we solve this problem without giving relay entry.
Because my client using mobile for access mail.he has configured outlook in
mobile and mobile takes dynamic ip address so i can`t give relay entry in my
MTA.


Thanks*