[Xastir] {Disarmed} Xastir mailing list trouble?

[Scott Evans]

This is most likely a mail config issue my end but I'm not getting mail from this list... 

Feb 7 22:18:09 vk7hse postfix/smtpd[19188]
: connect from rids.hsc.Virginia.EDU[128.14
3.202.140]
Feb 7 22:18:10 vk7hse postfix/smtpd[19188]
: NOQUEUE: reject: RCPT from rids.hsc.Virgi
nia.EDU[128.143.202.140]: 450 4.7.1 <d-128-
202-204.Virginia.EDU>: Helo command rejecte
d: Host not found; from=<xastir-bounces at lis
ts.xastir.org> to=<scott at vk7hse.hobby-site.
org> proto=ESMTP helo=<d-128-202-204.Virgin
ia.EDU>
Feb 7 22:18:10 vk7hse postfix/smtpd[19188]
: disconnect from rids.hsc.Virginia.EDU[128
.143.202.140]

Is this the server that hosts/sends out for this mailing list? 
-- 
Sent from my Android phone with K-9 Mail. Please excuse my brevity.