I have a AS/400 configured to send mails by the service SMTP

I can send a mail to guest@mycia.com.br but I cannot send a mail to guest@yahoo.com.br, how can I configure
this server ?.

Change TCP/IP Domain (CHGTCPDMN)

Type choices, press Enter.

Host name . . . . . . . . . . . ‘AS40025′

Domain name . . . . . . . . . . ‘MYCIA.COM.BR’

Domain search list . . . . . . . *DFT

Host name search priority . . . *LOCAL *REMOTE, *LOCAL, *SAME
Domain name server:
Internet address . . . . . . . ‘XXX.XXX.1.25′

Work with TCP/IP Host Table Entries
System: TDBSBC25
Type options, press Enter.
1=Add 2=Change 4=Remove 5=Display 7=Rename

Internet Host
Opt Address Name

XXX.XXX.1.25 AS40025
AS40025.RDB.COM.BR
AS40025.APPN.SNA.IBM.COM

Thanks for all.

Roberto