Emails Stuck in Server Queue

[keifer27]

I recently changed to a VPS with the Plesk Control Panel. Last night, I sceduled emails to go out to some of my lists. This morning, I logged in to ListMail and it said there were mails left in qeue and I clicked the resume button. There were about 400 of them and it would send about 100, then stop and I had to click resume about 4 or 5 times to get them all to send.

After that, I logged into my vps and went to the mail logs in plesk and there were quite a few email still in there. Looks like they are eventually sending, but 4 hours later there are still 11 emails left.

I emailed my hosting company and they said they checked the logs and everything and all was working as it should.

Any ideas what could be causing this?

Thanks,
Keith

[DW]

Hi Keith,

I am very familiar with Plesk servers.

Could you be reaching a 30 second timeout?  PHP "safe mode" should be disabled in the Hosting -> Setup options for the domain.

Have you optimized qmail on the server as per this post?

Regards

[keifer27]

Thanks Dean. I disabled the PHP Safe Mode and optimized qmail as in the post then resumed the scheduled emails that went out in tonight's daily mail and it sent this time. I am learning about VPS slowly, but surely.

Thanks,
Keith