Drupal 6.x

An interesting issue.

Can you please advise a module that is suitable for having submission and review of content functionality in drupal6 before being posted in the website.

I'm using Simplenews 6.x-2.0-alpha6, trying to send email newsletter but failed with following error message in syslog:

The following From address failed: admin@mywebsite.com> : MAIL not accepted from server,555,5.5.2 Syntax error. yg3sm93494629pab.16 - gsmtp#015#012SMTP server error: 5.5.2 Syntax error.

In MySQL if I want to delete a single user I'd use this query but how do I delete multiple users? Like all but the admin. I've been hit hard with spam and need to delete 300,000+ fake users. Thanks.

DELETE FROM `breadcom_site`.`users` WHERE `users`.`uid` = 7 LIMIT 1;

Need to hire assistance with Boost/caching config on a D6/Ubercart production site running on nginx. The present config is close, but still has a couple of bugs that are causing headaches. If you're a Boost specialist, get in touch! Thanks.

I successfully installed Nodejs server besides a Drupal 6 site (Nodejs integration module).
Everything seems running well during 1 hour ou sometimes half a day, and then the server.js crashes with a segmentation fault core dump.

Did anyone experienced that problem ?
Which method to debug the code ?