[tdf-mirrors] Advice on rsync sync reliability and throughput for mirror.raiolanetworks.com (TDF mirror, Spain)

Hello TDF mirrors team,

We operate https://mirror.raiolanetworks.com/ (Raiola Networks, Spain),
already registered as an official LibreOffice / TDF mirror and listed at
https://download.documentfoundation.org/mirmon/.

We are running into two recurring issues syncing tdf-pub and would
appreciate your help:

1) Connection cap rejections

   Our scheduled rsync runs are frequently rejected with:

       @ERROR: max connections (120) reached -- try again later
       rsync error: error starting client-server protocol (code 5)

   Could you add our source IP to an allowlist / reserved-slot list on
   rsync.documentfoundation.org so registered mirrors are not blocked by
   the global 120-connection cap?

   Source IP (rsync client): 91.132.103.246
   Source IPv6 (if used):    2a12:d282:102:f6::1

2) Very slow transfer speeds

   When the connection is accepted, throughput often drops to a few
   kbps for extended periods, which causes syncs to time out or take
   hours to finish. Is there a less-saturated upstream available for
   registered mirrors — for example a tier-1 rsync endpoint or a
   mirror-to-mirror source — that we could point at instead of the
   public rsync.documentfoundation.org?

Mirror details for reference:
  - Public URL:    https://mirror.raiolanetworks.com/tdf/
  - Location:      Spain (EU)
  - Operator:      Raiola Networks S.L.
  - Sync schedule: every 2 h, jittered (cron 0 */2 * * *, ±40 min)
  - rsync filters: -rlptH --safe-links --delete-after
  - Filelist guard: TIMESTAMP compared before each pull

Happy to provide logs, traceroutes, or run any test you need.

Thanks for your help.

Best regards,
—
*Martín Gómez*
martin@raiolanetworks.es

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