I have checked and rechecked the admin URL and password to my mailman mailing list. Still I get:
Sorry, testmailinglist mailing list registration is currently unavaiable. Please, try again shortly.
when I try to subscribe to the list ising user mailman register

when I look at the Drupal logs I see:
Message testmailinglist [1] list: HTTP error code.

the basic mailman module works fine.

Comments

whyameye’s picture

whyameye commented

solved: problem was that site was in maintenance mode offline. Drupal can't make http calls when offline.

samuelet’s picture

samuelet commented
Title: http error » http error in offline mode

Thanks, i did know such drupal behaviour so i'm going to fix it by warning admin with a message when in offline mode.

rjlang’s picture

rjlang commented
Assigned: Unassigned » rjlang
Status: Active » Closed (cannot reproduce)

I realize this was reported a LONG time ago. At any rate, current version of Drupal (6.28) and of UMR (6.x-2.2) are perfectly happy to to subscribe/unsubscribe while the site is in offline mode, so I'm closing this.