[ldm-users] request question. How is this getting in?

• To: LDM Users <ldm-users@xxxxxxxxxxxxxxxx>
• Subject: [ldm-users] request question. How is this getting in?
• From: Joseph Spenner <joseph85750@xxxxxxxxx>
• Date: Thu, 20 Dec 2018 21:58:59 +0000 (UTC)

Related to my previous question, I have an LDM requesting METARs.  I have the 
following request strings:
REQUEST IDS|DDPLUS|HDS  "^S[AP]US[7|8]0 (....) 
([0-3][0-9])([0-2][0-9][0-9][0-9])"     upstream.ip.address
REQUEST IDS|DDPLUS|HDS  "^S[AP]AK[41|42|43|44|70] (....) 
([0-3][0-9])([0-2][0-9][0-9][0-9])"     upstream.ip.address
REQUEST IDS|DDPLUS "^(WW....) (....)" upstream.ip.address

My question is-- how this is arriving:
Dec 20 21:54:32 notifyme[32362] INFO:      600 20181220215418.586 IDS|DDPLUS 
999  SAUK31 EGGY 202150

I can't see how SAUK31 could be part of any of the request strings.?
Thanks!