[Cialug] Gmail issue

[L. V. Lammert]

Getting back to a small problem wiht gmail - a while back it stopped
accepting email from our PBX, hence I no longer get individual emails when
a voicemail is left.

Mar  6 11:54:33 PBX sm-mta[20505]: 326HsWIk020503:
to=<lvlammert at gmail.com>, ctladdr=<lvl at PBX.omnitec.net> (1000/1000),
delay=00:00:01, xdelay=00:00:01, mailer=esmtp, pri=12
0387, relay=gmail-smtp-in.l.google.com. [64.233.177.27], dsn=5.0.0,
stat=Service unavailable

The source email (lvl at pbx.omnitec.net) is in my contacts, yet Google still
refuses to accept email from it.

Anyone dealt with "Service unavailable"?

	TIA!