Solaris

Hello Gurus,

On server xyz. I need to configure sendmail.
Sendmail server is abc.xxx.xx.com

Important thing is sendmail server is resolving only by DNS , even ping is not happening.
But when I configure in /etc/mail/sendmail.cf as show below

DSabc.xxx.xx.com

Still I am receiving the following error in /var/log/syslog

Oct 1 08:47:47 xyz sendmail[11142]: [ID 801593 mail.info] n917llE11142: from=username, size=67, class=0, nrcpts=1, msgid=<200910010747.n917llE11142@xyz.loghost>, relay=root@localhost
Oct 1 08:47:47 xyz sendmail[11144]: [ID 801593 mail.info] n917llE11142: to=mailid, ctladdr=username (9212/1), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=120067, relay=abc.xxx.xx.com. [xx.xx.xx.x], dsn=5.0.0, stat=Service unavailableOct 1 08:47:47 xyz sendmail[11144]: [ID 801593 mail.info] n917llE11142: n917llD11144: DSN: Service unavailable
Oct 1 08:47:47 xyz sendmail[11144]: [ID 801593 mail.info] n917llD11144: to=username, delay=00:00:00, xdelay=00:00:00, mailer=local, pri=30112, relay=local, dsn=2.0.0, stat=Sent
Oct 1 08:52:30 xyz sendmail[11189]: [ID 801593 mail.info] n917qUP11189: from=remedy, size=275, class=0, nrcpts=1, msgid=<200910010752.n917qUP11189@xyz.loghost>, relay=remedy@localhost
Oct 1 08:52:30 xyz sendmail[11191]: [ID 801593 mail.info] n917qUP11189: to=remedy, ctladdr=remedy (9206/1), delay=00:00:00, xdelay=00:00:00, mailer=local, pri=120275, relay=local, dsn=2.0.0, stat=Sent


Working server:- mailer=relay, pri=30061, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (n8UETcI5013459 Message accepted for delivery)Issue:-mailer=relay, pri=120067, relay=abc.xxx.xx.com. dsn=5.0.0, stat=Service unavailable

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