Sendmail refuse to send an email (mail loops back to me)

Hi,

I have problem sending mail on Solaris 10 installed in Sparc. How can I
resolve this?

Thanks!


Jan 23 10:14:22 mickeys sendmail[1074]: [ID 801593 mail.info]
m0NFEMUx001074: to=rmp.dmd1229@xxxxxx, ctladdr=admin (100/100),
delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30073, relay=[127.0.0.1]
[127.0.0.1], dsn=2.0.0, stat=Sent (m0NFEM3k001075 Message accepted for
delivery)

Jan 23 10:14:26 mickeys sendmail[1077]: [ID 801593 mail.info]
m0NFEM3k001075: to=<rmp.dmd1229@xxxxxx>, delay=00:00:04, xdelay=00:00:04,
mailer=esmtp, pri=120390, relay=mailhost.rmp.ca [192.168.5.241], dsn=5.0.0,
stat=Service unavailable

Jan 23 10:14:26 mickeys sendmail[1077]: [ID 801593 mail.info]
m0NFEM3k001075: m0NFEQ3k001077: DSN: Service unavailable

Jan 23 10:14:26 mickeys sendmail[1077]: [ID 801593 mail.crit]
m0NFEQ3k001077: SYSERR(root): localhost.rmp.ca. config error: mail loops
back to me (MX problem?)

Jan 23 10:14:26 mickeys sendmail[1078]: [ID 801593 mail.info]
m0NFEQut001078: localhost [127.0.0.1] did not issue MAIL/EXPN/VRFY/ETRN
during connection to MTA-v4

Jan 23 10:14:26 mickeys sendmail[1077]: [ID 801593 mail.info]
m0NFEQ3k001077: to=<admin@xxxxxxxxxxxxxx>, delay=00:00:00, xdelay=00:00:00,
mailer=esmtp, pri=31642, relay=localhost.rmp.ca. [127.0.0.1], dsn=5.3.5,
stat=Local configuration error

Jan 23 10:14:26 mickeys sendmail[1077]: [ID 801593 mail.info]
m0NFEQ3k001077: m0NFEQ3l001077: return to sender: Local configuration error

Jan 23 10:14:26 mickeys sendmail[1077]: [ID 801593 mail.info]
m0NFEQ3l001077: to=root, delay=00:00:00, xdelay=00:00:00, mailer=local,
pri=32666, relay=local, dsn=2.0.0, stat=Sent
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