Print

Print


Andy and I did some deep debugging of where the cert init fails ... and it
turned out the problem was 1024-bit key of the proxy cert on the client machine
--- openssl-1.1.1k (which comes with cos-8) apparently requires the key to be at
least 2048 bits when calling SSL_CTX_use_certificate_file().

After we replaced it with my 2048-bit key cert it worked no problem.

On fedora-34 the default key length generated by voms-proxy-init is already
2048, on centos-7.9 it is still 1024. One can get longer keys with -bits option:
voms-proxy-init -bits 2048 -voms cms

Andy will try to get more informative error messages from openssl ... but this
doesn't seem entirely trivial as the error gets set at the top-level function
and we had to go three levels down to see the actual error code that we were
able to google.

Matevz

On 2/15/22 19:46, Justas Balcas wrote:
> That is correct, Matevz
> 
> On Tue, Feb 15, 2022, 18:39 Matevz Tadel <[log in to unmask]
> <mailto:[log in to unmask]>> wrote:
> 
>     Thank you Andy!
> 
>     The error is permanent, I think. Justas, can you please confirm?
> 
>     Matevz
> 
>     On 2/15/22 17:49, Andrew Hanushevsky wrote:
>     > Here are the common problems when the client issues that message:
>     >
>     > 1) The certificate's chain of trust is broken (could be because the root CA
>     > can't be verified, or the root/intermediate certificate has expired). This
>     would
>     > cause sproradic failures (note that if the certificate is improperly installed
>     > then the failure would always occur which is not the case here).
>     >
>     > 2) The certificate must be renewed before the expiry of the certificate to
>     avoid
>     > any conflict arising out of time violation. Ensure that the date/time is set
>     > correctly on your computer since that might be used to assess the validity
>     > period of the SSL certificate of the website. This would cause repated
>     failures
>     > on some sites but not others depending on how close the cert was to expiring.
>     >
>     > 3) The certificate structure is broken, or the certificate's signature
>     can't be
>     > checked. This is the hardest to solve but one reason could me random memory
>     > corruption. I would suggest runningthe client with valgrind and try to
>     match the
>     > valgring log with the invalid cert message.
>     >
>     > 4) Firewall issues may cause problems with they have been enabled for
>     > "encrypted/SSL scanning or checking."
>     >
>     > 5) If tghe server is using only SHA-1 encryption then those cert are
>     flagged as
>     > insecure and need to update their security certificates. However, would most
>     > likely cause permanent errors.
>     >
>     > Andy
>     >
>     >
>     >
>     > On Tue, 15 Feb 2022, Matevz Tadel wrote:
>     >
>     >> Andy,
>     >>
>     >> What's with the invalid certificate in the client log?
>     >>
>     >> [2022-02-15 09:56:19.549139 -0800][Debug  ][XRootDTransport   ]
>     >> [transfer-9.ultralight.org
>     <https://urldefense.proofpoint.com/v2/url?u=http-3A__transfer-2D9.ultralight.org&d=DwMFaQ&c=-35OiAkTchMrZOngvJPOeA&r=f2PhPg2_OoVvPAKGXfp4WG1YcdhQC9qsy2uMHw3Z_6k&m=9Kg_R4c2zF6HHZSpAb3h3VrMr_pFJQ260VSKabOPtkulYwNWdPSP-sd5LVhMjPpw&s=nlq02y75DI9NFCQLEryIqIoDoyClnOqIZlWhu5rJJMc&e=>:1095.0]
>     Sending out kXR_login request, username:
>     >> root, cgi:
>     >> ?xrd.cc=us&xrd.tz
>     <https://urldefense.proofpoint.com/v2/url?u=http-3A__xrd.tz&d=DwMFaQ&c=-35OiAkTchMrZOngvJPOeA&r=f2PhPg2_OoVvPAKGXfp4WG1YcdhQC9qsy2uMHw3Z_6k&m=9Kg_R4c2zF6HHZSpAb3h3VrMr_pFJQ260VSKabOPtkulYwNWdPSP-sd5LVhMjPpw&s=-Rc4_LmnigwN9z03K7gZrf-B9w2_b0g2EkivTF0FV9U&e=>=-8&xrd.appname=xrdcp&xrd.info
>     <https://urldefense.proofpoint.com/v2/url?u=http-3A__xrd.info&d=DwMFaQ&c=-35OiAkTchMrZOngvJPOeA&r=f2PhPg2_OoVvPAKGXfp4WG1YcdhQC9qsy2uMHw3Z_6k&m=9Kg_R4c2zF6HHZSpAb3h3VrMr_pFJQ260VSKabOPtkulYwNWdPSP-sd5LVhMjPpw&s=j_3eK4Ghw7zsEUpD0XXrLaG5_Maj8wMSMXpXUC-Up5Y&e=>=&xrd.hostname=xrd-cache-3.ultralight.org
>     <https://urldefense.proofpoint.com/v2/url?u=http-3A__xrd-2Dcache-2D3.ultralight.org&d=DwMFaQ&c=-35OiAkTchMrZOngvJPOeA&r=f2PhPg2_OoVvPAKGXfp4WG1YcdhQC9qsy2uMHw3Z_6k&m=9Kg_R4c2zF6HHZSpAb3h3VrMr_pFJQ260VSKabOPtkulYwNWdPSP-sd5LVhMjPpw&s=PYd32OF7sFBQVcQsXBH9TGn-f4DSZENRYSAySzIRVUE&e=>&xrd.rn=v5.2.0,
>     >> dual-stack: true, private IPv4: false, private IPv6: false
>     >> [2022-02-15 09:56:19.549209 -0800][Debug  ][AsyncSock         ]
>     >> [transfer-9.ultralight.org
>     <https://urldefense.proofpoint.com/v2/url?u=http-3A__transfer-2D9.ultralight.org&d=DwMFaQ&c=-35OiAkTchMrZOngvJPOeA&r=f2PhPg2_OoVvPAKGXfp4WG1YcdhQC9qsy2uMHw3Z_6k&m=9Kg_R4c2zF6HHZSpAb3h3VrMr_pFJQ260VSKabOPtkulYwNWdPSP-sd5LVhMjPpw&s=nlq02y75DI9NFCQLEryIqIoDoyClnOqIZlWhu5rJJMc&e=>:1095.0]
>     TLS hand-shake exchange.
>     >>
>     >> ===> HERE:
>     >> [2022-02-15 09:56:19.551762 -0800][Error  ][TlsMsg            ]
>     [TLS_Context:]
>     >> Unable to create TLS context; invalid certificate.
>     >>
>     >> [2022-02-15 09:56:19.551903 -0800][Error  ][AsyncSock         ]
>     >> [transfer-9.ultralight.org
>     <https://urldefense.proofpoint.com/v2/url?u=http-3A__transfer-2D9.ultralight.org&d=DwMFaQ&c=-35OiAkTchMrZOngvJPOeA&r=f2PhPg2_OoVvPAKGXfp4WG1YcdhQC9qsy2uMHw3Z_6k&m=9Kg_R4c2zF6HHZSpAb3h3VrMr_pFJQ260VSKabOPtkulYwNWdPSP-sd5LVhMjPpw&s=nlq02y75DI9NFCQLEryIqIoDoyClnOqIZlWhu5rJJMc&e=>:1095.0]
>     Socket error while handshaking: [FATAL] TLS
>     >> error
>     >> [2022-02-15 09:56:19.551920 -0800][Debug  ][AsyncSock         ]
>     >> [transfer-9.ultralight.org
>     <https://urldefense.proofpoint.com/v2/url?u=http-3A__transfer-2D9.ultralight.org&d=DwMFaQ&c=-35OiAkTchMrZOngvJPOeA&r=f2PhPg2_OoVvPAKGXfp4WG1YcdhQC9qsy2uMHw3Z_6k&m=9Kg_R4c2zF6HHZSpAb3h3VrMr_pFJQ260VSKabOPtkulYwNWdPSP-sd5LVhMjPpw&s=nlq02y75DI9NFCQLEryIqIoDoyClnOqIZlWhu5rJJMc&e=>:1095.0]
>     Closing the socket
>     >>
>     >> Can I run in gdb to get more info? What is good place to start poking?
>     >>
>     >> I was assuming it's the server cert that client does not like ... but it does
>     >> look ok to me :)
>     >>
>     >> Matevz
>     >>
>     >>
>     >> On 2/15/22 14:04, Andrew Hanushevsky wrote:
>     >>> Hi Bockjoo,
>     >>>
>     >>> Unfortunately, that's not the way it works. While gsi doesn't need to
>     use TLS
>     >>> ztn does. Since the erver doesn't know which protocol the client will
>     eventually
>     >>> settle on, the connection has to use TLS right from the start. That
>     means you
>     >>> cannot use ztn with incapable clients.
>     >>>
>     >>> Andy
>     >>>
>     >>>
>     >>> On Tue, 15 Feb 2022, Bockjoo Kim wrote:
>     >>>
>     >>>> Hi Andy,
>     >>>>
>     >>>> There are two sec.protocols: gsi and ztn.
>     >>>>
>     >>>> Doesn't the interaction go through gsi and if it fails, will it go
>     through ztn?
>     >>>>
>     >>>> For incapable clients, the gsi can succeed, no?
>     >>>>
>     >>>> Thanks,
>     >>>>
>     >>>> Bockjoo
>     >>>>
>     >>>> On 2/15/22 14:52, Andrew Hanushevsky wrote:
>     >>>>> Hi Justas,
>     >>>>>
>     >>>>> If you look into the log you will notice a warning that tells you that TLS
>     >>>>> will always be on regardless of the "capable" setting because
>     authentication
>     >>>>> protocol ztn requires tls. So, this may be the source of the problem,
>     >>>>> certainly it will be for incapable clients.
>     >>>>>
>     >>>>> Andy
>     >>>>>
>     >>>>>
>     >>>>> On Tue, 15 Feb 2022, Justas Balcas wrote:
>     >>>>>
>     >>>>>> Hi,
>     >>>>>>
>     >>>>>> Server's/Clients are running > 5.3.X release (not 5.4). I took out 1
>     server
>     >>>>>> from prod and played with full debug mode, on/off tls.
>     >>>>>>
>     >>>>>> Logs from server/client are available here:
>     >>>>>>
>     https://urldefense.proofpoint.com/v2/url?u=https-3A__login-2D1.hep.caltech.edu_-7Ejbalcas_tls_&d=DwIDaQ&c=-35OiAkTchMrZOngvJPOeA&r=f2PhPg2_OoVvPAKGXfp4WG1YcdhQC9qsy2uMHw3Z_6k&m=cxGPTdnshuISdao1V4PsW-krXJuMxpk57T8cXetcP32UCNNa9pgqm--1NTcRuVNW&s=tns3GlZokUnAN9f_4ZHOR1kQXE0DrfqOgDK3bos6dS4&e=
>     <https://urldefense.proofpoint.com/v2/url?u=https-3A__login-2D1.hep.caltech.edu_-7Ejbalcas_tls_&d=DwIDaQ&c=-35OiAkTchMrZOngvJPOeA&r=f2PhPg2_OoVvPAKGXfp4WG1YcdhQC9qsy2uMHw3Z_6k&m=cxGPTdnshuISdao1V4PsW-krXJuMxpk57T8cXetcP32UCNNa9pgqm--1NTcRuVNW&s=tns3GlZokUnAN9f_4ZHOR1kQXE0DrfqOgDK3bos6dS4&e=>
>     >>>>>>
>     >>>>>>
>     >>>>>> To turn TLS, I added this config:
>     >>>>>> xrd.tls /etc/grid-security/xrootd/xrootdcert.pem
>     >>>>>> /etc/grid-security/xrootd/xrootdkey.pem
>     >>>>>> xrd.tlsca certdir /etc/grid-security/certificates
>     >>>>>> xrootd.tls capable all
>     >>>>>> sec.protocol /usr/lib64 ztn
>     >>>>>>
>     >>>>>> And with TLS on - I always get:
>     >>>>>> TLS hand-shake exchange.
>     >>>>>> Socket error while handshaking: [FATAL] TLS error
>     >>>>>> Closing the socket
>     >>>>>>
>     >>>>>>
>     >>>>>> If it helps, here is full config:
>     >>>>>>
>     >>>>>> all.export /tmp stage
>     >>>>>> frm.xfr.copycmd /bin/cp /dev/null $PFN
>     >>>>>> all.adminpath /var/spool/xrootd
>     >>>>>> all.pidpath /var/run/xrootd
>     >>>>>>
>     >>>>>> # XrootD Security
>     >>>>>> # ---------------------------------------
>     >>>>>> xrootd.seclib /usr/lib64/libXrdSec.so
>     >>>>>> sec.protocol /usr/lib64 gsi -certdir:/etc/grid-security/certificates
>     >>>>>> -cert:/etc/grid-security/xrootd/xrootdcert.pem
>     >>>>>> -key:/etc/grid-security/xrootd/xrootdkey.pem -crl:3
>     >>>>>> -authzfun:libXrdLcmaps.so -authzto:900
>     >>>>>> -authzfunparms:lcmapscfg=/etc/xrootd/lcmaps.cfg -gmapopt:10 -gmapto:0
>     >>>>>> acc.authdb /etc/xrootd/auth_file_stageout
>     >>>>>> ofs.authorize
>     >>>>>> macaroons.secretkey /etc/xrootd/macaroon-secret
>     >>>>>> ofs.authlib ++ libXrdMacaroons.so
>     >>>>>> ofs.authlib ++ libXrdAccSciTokens.so
>     >>>>>> # --------------------------------------
>     >>>>>> # XrootD Monitoring
>     >>>>>> # --------------------------------------
>     >>>>>> # Monitoring for AAA Dashboard :
>     >>>>>> xrd.report 169.228.130.91:9931
>     <https://urldefense.proofpoint.com/v2/url?u=http-3A__169.228.130.91-3A9931&d=DwMFaQ&c=-35OiAkTchMrZOngvJPOeA&r=f2PhPg2_OoVvPAKGXfp4WG1YcdhQC9qsy2uMHw3Z_6k&m=9Kg_R4c2zF6HHZSpAb3h3VrMr_pFJQ260VSKabOPtkulYwNWdPSP-sd5LVhMjPpw&s=AW4Xegl5wxbeERkKViynNkyDzu4pC5VhL7QR8sFGF44&e=>
>     every 30s all sync
>     >>>>>> xrootd.monitor all auth flush 30s window 5s fstat 60 lfn ops xfr 5 dest
>     >>>>>> files io info user 169.228.130.91:9930
>     <https://urldefense.proofpoint.com/v2/url?u=http-3A__169.228.130.91-3A9930&d=DwMFaQ&c=-35OiAkTchMrZOngvJPOeA&r=f2PhPg2_OoVvPAKGXfp4WG1YcdhQC9qsy2uMHw3Z_6k&m=9Kg_R4c2zF6HHZSpAb3h3VrMr_pFJQ260VSKabOPtkulYwNWdPSP-sd5LVhMjPpw&s=9w5jNESVzo8Kp4KzAUI0Ymeo-wcerH5BqhqE0Rfk6oU&e=>
>     dest fstat info user
>     >>>>>> xrd-mon.osgstorage.org:9930
>     <https://urldefense.proofpoint.com/v2/url?u=http-3A__xrd-2Dmon.osgstorage.org-3A9930&d=DwMFaQ&c=-35OiAkTchMrZOngvJPOeA&r=f2PhPg2_OoVvPAKGXfp4WG1YcdhQC9qsy2uMHw3Z_6k&m=9Kg_R4c2zF6HHZSpAb3h3VrMr_pFJQ260VSKabOPtkulYwNWdPSP-sd5LVhMjPpw&s=lMHFksodly_4DGpPCSpc0-Wb9UGjl1_8yif-C2TNQrI&e=>
>     >>>>>> all.sitename T2_US_Caltech
>     >>>>>> # -------------------------------------
>     >>>>>> # Configure redirector/server
>     >>>>>> # -------------------------------------
>     >>>>>> set xrdr = xrootd-redir-stageout.ultralight.org
>     <https://urldefense.proofpoint.com/v2/url?u=http-3A__xrootd-2Dredir-2Dstageout.ultralight.org&d=DwMFaQ&c=-35OiAkTchMrZOngvJPOeA&r=f2PhPg2_OoVvPAKGXfp4WG1YcdhQC9qsy2uMHw3Z_6k&m=9Kg_R4c2zF6HHZSpAb3h3VrMr_pFJQ260VSKabOPtkulYwNWdPSP-sd5LVhMjPpw&s=HTNBiz85qLXQGkB75MafMeY4xc6vwkMUMuatd5_g0mo&e=>
>     >>>>>> xrd.port 1095
>     >>>>>> all.manager $(xrdr):1213
>     >>>>>>
>     >>>>>> if $(xrdr)
>     >>>>>>  # It's role is manager
>     >>>>>>  all.role manager
>     >>>>>>  # Redirect all lookup calls to original data servers. Redirector
>     does not
>     >>>>>> have visibility of FS
>     >>>>>>  cms.dfs lookup distrib mdhold 20m redirect immed
>     >>>>>> else
>     >>>>>>  # Role is server
>     >>>>>>  all.role server
>     >>>>>>  # The known managers (local redirector)
>     >>>>>>  all.manager meta $(xrdr):1213
>     >>>>>>
>     >>>>>>  # Enable xrootd checksum calculation "on-the-fly" using multiuser plugin
>     >>>>>>  # This makes XRootD to write the files with the
>     >>>>>>  # ownership of the user that authenticated to the server and not as the
>     >>>>>>  # 'xrootd' user
>     >>>>>>  ofs.osslib ++ libXrdMultiuser.so
>     >>>>>>  # Enable the checksum wrapper
>     >>>>>>  ofs.ckslib * libXrdMultiuser.so
>     >>>>>>  # Control of checksum
>     >>>>>>  xrootd.chksum max 10 adler32
>     >>>>>>  multiuser.checksumonwrite on
>     >>>>>>  multiuser.umask 0002
>     >>>>>>
>     >>>>>> fi
>     >>>>>> # -------------------------------------
>     >>>>>> # Allow only specific path, checksum config
>     >>>>>> # -------------------------------------
>     >>>>>> # Allow any path to be exported; this is further refined in the authfile.
>     >>>>>> all.export /
>     >>>>>>
>     >>>>>> # Hosts allowed to use this xrootd cluster
>     >>>>>> cms.allow host *
>     >>>>>>
>     >>>>>> # Enable xrootd debugging
>     >>>>>> xrootd.trace emsg login stall redirect
>     >>>>>> cms.trace defer files forward redirect
>     >>>>>>
>     >>>>>> # Disable async. Related issue:
>     >>>>>>
>     https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_xrootd_xrootd_issues_1113&d=DwIDaQ&c=-35OiAkTchMrZOngvJPOeA&r=f2PhPg2_OoVvPAKGXfp4WG1YcdhQC9qsy2uMHw3Z_6k&m=cxGPTdnshuISdao1V4PsW-krXJuMxpk57T8cXetcP32UCNNa9pgqm--1NTcRuVNW&s=L2XeYWMRRqstD75CgZb1yCHO9dgWL2K6Uqmqto5rx_Q&e=
>     <https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_xrootd_xrootd_issues_1113&d=DwIDaQ&c=-35OiAkTchMrZOngvJPOeA&r=f2PhPg2_OoVvPAKGXfp4WG1YcdhQC9qsy2uMHw3Z_6k&m=cxGPTdnshuISdao1V4PsW-krXJuMxpk57T8cXetcP32UCNNa9pgqm--1NTcRuVNW&s=L2XeYWMRRqstD75CgZb1yCHO9dgWL2K6Uqmqto5rx_Q&e=>
>     >>>>>>
>     >>>>>> xrootd.async off
>     >>>>>>
>     >>>>>> # -------------------------------------
>     >>>>>> # Integrate with CMS Namespaces
>     >>>>>> # It will see files under /store/...
>     >>>>>> # -------------------------------------
>     >>>>>> oss.localroot /storage/cms
>     >>>>>> # -------------------------------------
>     >>>>>> # Configure davs/https for TPC
>     >>>>>> # -------------------------------------
>     >>>>>> # Enable https over XrootD
>     >>>>>> if exec xrootd
>     >>>>>>  xrd.protocol http:1095 /usr/lib64/libXrdHttp.so
>     >>>>>>  http.cadir /etc/grid-security/certificates
>     >>>>>>  http.cert /etc/grid-security/xrootd/xrootdcert.pem
>     >>>>>>  http.key /etc/grid-security/xrootd/xrootdkey.pem
>     >>>>>>  http.secxtractor /usr/lib64/libXrdLcmaps.so
>     >>>>>>  http.secretkey XXXXXXX
>     >>>>>>  # Enable third-party-copy
>     >>>>>>  http.exthandler xrdtpc libXrdHttpTPC.so
>     >>>>>>  # Pass the bearer token to the Xrootd authorization framework.
>     >>>>>>  http.header2cgi Authorization authz
>     >>>>>>  http.listingdeny yes
>     >>>>>>  http.desthttps yes
>     >>>>>>  http.selfhttps2http no
>     >>>>>>  http.staticpreload
>     >>>>>>
>     https://urldefense.proofpoint.com/v2/url?u=http-3A__static_robots.txt&d=DwIDaQ&c=-35OiAkTchMrZOngvJPOeA&r=f2PhPg2_OoVvPAKGXfp4WG1YcdhQC9qsy2uMHw3Z_6k&m=cxGPTdnshuISdao1V4PsW-krXJuMxpk57T8cXetcP32UCNNa9pgqm--1NTcRuVNW&s=Laz4x7NvD_fTheDJu5m_cEES6_pePEidCLIAkrYNvPs&e=
>     <https://urldefense.proofpoint.com/v2/url?u=http-3A__static_robots.txt&d=DwIDaQ&c=-35OiAkTchMrZOngvJPOeA&r=f2PhPg2_OoVvPAKGXfp4WG1YcdhQC9qsy2uMHw3Z_6k&m=cxGPTdnshuISdao1V4PsW-krXJuMxpk57T8cXetcP32UCNNa9pgqm--1NTcRuVNW&s=Laz4x7NvD_fTheDJu5m_cEES6_pePEidCLIAkrYNvPs&e=> 
>     >>>>>>
>     >>>>>> /etc/xrootd/robots.txt
>     >>>>>>  http.exthandler xrdmacaroons libXrdMacaroons.so
>     >>>>>> fi
>     >>>>>>
>     >>>>>>
>     >>>>>> xrd.tls /etc/grid-security/xrootd/xrootdcert.pem
>     >>>>>> /etc/grid-security/xrootd/xrootdkey.pem
>     >>>>>> xrd.tlsca certdir /etc/grid-security/certificates
>     >>>>>> xrootd.tls capable all
>     >>>>>> sec.protocol /usr/lib64 ztn
>     >>>>>>
>     >>>>>>
>     >>>>>>
>     >>>>>> xrootd.trace all
>     >>>>>> xrd.trace    all
>     >>>>>> ofs.trace    all
>     >>>>>> pfc.trace    all
>     >>>>>> cms.trace    all
>     >>>>>> # To debug connections to the fedration (5 Dump, 4 Debug, 3 Error, 2
>     >>>>>> Warning, 1 Info)
>     >>>>>> pss.setopt   DebugLevel 4
>     >>>>>>
>     >>>>>> ########################################################################
>     >>>>>> Use REPLY-ALL to reply to list
>     >>>>>>
>     >>>>>> To unsubscribe from the XROOTD-L list, click the following link:
>     >>>>>>
>     https://urldefense.proofpoint.com/v2/url?u=https-3A__listserv.slac.stanford.edu_cgi-2Dbin_wa-3FSUBED1-3DXROOTD-2DL-26A-3D1&d=DwIDaQ&c=-35OiAkTchMrZOngvJPOeA&r=f2PhPg2_OoVvPAKGXfp4WG1YcdhQC9qsy2uMHw3Z_6k&m=cxGPTdnshuISdao1V4PsW-krXJuMxpk57T8cXetcP32UCNNa9pgqm--1NTcRuVNW&s=nmhVko_mWVLPvjSwEKtKkm17GDZSKRYlu7FW5xSiWAg&e=
>     <https://urldefense.proofpoint.com/v2/url?u=https-3A__listserv.slac.stanford.edu_cgi-2Dbin_wa-3FSUBED1-3DXROOTD-2DL-26A-3D1&d=DwIDaQ&c=-35OiAkTchMrZOngvJPOeA&r=f2PhPg2_OoVvPAKGXfp4WG1YcdhQC9qsy2uMHw3Z_6k&m=cxGPTdnshuISdao1V4PsW-krXJuMxpk57T8cXetcP32UCNNa9pgqm--1NTcRuVNW&s=nmhVko_mWVLPvjSwEKtKkm17GDZSKRYlu7FW5xSiWAg&e=>
>     >>>>>>
>     >>>>>>
>     >>>>>
>     >>>>> ########################################################################
>     >>>>> Use REPLY-ALL to reply to list
>     >>>>>
>     >>>>> To unsubscribe from the XROOTD-L list, click the following link:
>     >>>>>
>     https://urldefense.proofpoint.com/v2/url?u=https-3A__listserv.slac.stanford.edu_cgi-2Dbin_wa-3FSUBED1-3DXROOTD-2DL-26A-3D1&d=DwIDaQ&c=-35OiAkTchMrZOngvJPOeA&r=f2PhPg2_OoVvPAKGXfp4WG1YcdhQC9qsy2uMHw3Z_6k&m=cxGPTdnshuISdao1V4PsW-krXJuMxpk57T8cXetcP32UCNNa9pgqm--1NTcRuVNW&s=nmhVko_mWVLPvjSwEKtKkm17GDZSKRYlu7FW5xSiWAg&e=
>     <https://urldefense.proofpoint.com/v2/url?u=https-3A__listserv.slac.stanford.edu_cgi-2Dbin_wa-3FSUBED1-3DXROOTD-2DL-26A-3D1&d=DwIDaQ&c=-35OiAkTchMrZOngvJPOeA&r=f2PhPg2_OoVvPAKGXfp4WG1YcdhQC9qsy2uMHw3Z_6k&m=cxGPTdnshuISdao1V4PsW-krXJuMxpk57T8cXetcP32UCNNa9pgqm--1NTcRuVNW&s=nmhVko_mWVLPvjSwEKtKkm17GDZSKRYlu7FW5xSiWAg&e=>
>     >>>>>
>     >>>>
>     >>>>
>     >>>> ########################################################################
>     >>>> Use REPLY-ALL to reply to list
>     >>>>
>     >>>> To unsubscribe from the XROOTD-L list, click the following link:
>     >>>>
>     https://urldefense.proofpoint.com/v2/url?u=https-3A__listserv.slac.stanford.edu_cgi-2Dbin_wa-3FSUBED1-3DXROOTD-2DL-26A-3D1&d=DwIDaQ&c=-35OiAkTchMrZOngvJPOeA&r=f2PhPg2_OoVvPAKGXfp4WG1YcdhQC9qsy2uMHw3Z_6k&m=cxGPTdnshuISdao1V4PsW-krXJuMxpk57T8cXetcP32UCNNa9pgqm--1NTcRuVNW&s=nmhVko_mWVLPvjSwEKtKkm17GDZSKRYlu7FW5xSiWAg&e=
>     <https://urldefense.proofpoint.com/v2/url?u=https-3A__listserv.slac.stanford.edu_cgi-2Dbin_wa-3FSUBED1-3DXROOTD-2DL-26A-3D1&d=DwIDaQ&c=-35OiAkTchMrZOngvJPOeA&r=f2PhPg2_OoVvPAKGXfp4WG1YcdhQC9qsy2uMHw3Z_6k&m=cxGPTdnshuISdao1V4PsW-krXJuMxpk57T8cXetcP32UCNNa9pgqm--1NTcRuVNW&s=nmhVko_mWVLPvjSwEKtKkm17GDZSKRYlu7FW5xSiWAg&e=>
>     >>>>
>     >>>>
>     >>>
>     >>> ########################################################################
>     >>> Use REPLY-ALL to reply to list
>     >>>
>     >>> To unsubscribe from the XROOTD-L list, click the following link:
>     >>>
>     https://urldefense.proofpoint.com/v2/url?u=https-3A__listserv.slac.stanford.edu_cgi-2Dbin_wa-3FSUBED1-3DXROOTD-2DL-26A-3D1&d=DwIDaQ&c=-35OiAkTchMrZOngvJPOeA&r=f2PhPg2_OoVvPAKGXfp4WG1YcdhQC9qsy2uMHw3Z_6k&m=cxGPTdnshuISdao1V4PsW-krXJuMxpk57T8cXetcP32UCNNa9pgqm--1NTcRuVNW&s=nmhVko_mWVLPvjSwEKtKkm17GDZSKRYlu7FW5xSiWAg&e=
>     <https://urldefense.proofpoint.com/v2/url?u=https-3A__listserv.slac.stanford.edu_cgi-2Dbin_wa-3FSUBED1-3DXROOTD-2DL-26A-3D1&d=DwIDaQ&c=-35OiAkTchMrZOngvJPOeA&r=f2PhPg2_OoVvPAKGXfp4WG1YcdhQC9qsy2uMHw3Z_6k&m=cxGPTdnshuISdao1V4PsW-krXJuMxpk57T8cXetcP32UCNNa9pgqm--1NTcRuVNW&s=nmhVko_mWVLPvjSwEKtKkm17GDZSKRYlu7FW5xSiWAg&e=>
>     >>>
>     >>>
>     >>
> 

########################################################################
Use REPLY-ALL to reply to list

To unsubscribe from the XROOTD-L list, click the following link:
https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=XROOTD-L&A=1