Hi. We updated LimeSurvey to version 2.70.0+170921 some weeks ago. Everything is working well except for the send of invitation and reminders. With previous version, every batch of 500 mails took 3 o 4 minutes, and now it takes 40 to 45 minutes. We already tried to send batches of 50 instead 500, but sending mails still takes too long.
Someone with an idea for solution?

Thank you very much.

See:
www.limesurvey.org/forum/development/112761-send-massive-emails

seems to be similar.

Regards
Joffm

Hi. Problem was address ip in a black list internal. Thank you!