If I try to send an email to the users I want, around 1600 in total, the process will simply get stuck after clicking the "Send Email" button and the browser (Firefox) will constantly sit in a "Waiting for forum.mydomain.com..." state. I've tried leaving it overnight to see if any progress is made but none occurs.
The "Send Test Email" button does work, though with a noticeable delay of around 15-20 seconds. On the old host it was fairly instant.
In the board's email settings, I have tried using both default PHP and the specific SMTP server suggested by the host, but the problem still occurs.
My server logs indicate there is a generic 500 server error happening but nothing specific:
#.#.#.# - - [03/Apr/2014:13:49:37 -0500] "POST /admin.php?users/email-send HTTP/1.1" 500 296 "http://forum.mydomain.com/admin.php?users/email" "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:28.0) Gecko/20100101 Firefox/28.0"
1) I already know from working through the update to 1.3 that the hosts have the PHP functions show_source and allow_url_fopen disabled. They are not willing to lift these restrictions. Could this affect XF's email users function?
2) Assuming I can get this working again with the help of folks here, my host also has a limit of sending 500 emails per hour. Does that mean I would need to send batches of emails across four hours for my users?
3) Should I try backing up and freshly installing XF? In transferring to the new host, I didn't cleanly install, rather I simply copied the files, adjusted the database settings in the "library/config.php", and imported the old mySQL data. Everything except emails have been working fine since.
Thanks in advance for any help!