CiviCRM Community Forums (archive)

We're having similar issues. I think this can be tracked down to two things:

1) Large attachments and slow internet connection (upload): default php aximum execution time of 30 seconds isn't long enough to upload 1 message and it's failing on this... maximum exec. time can be updated in php.ini

2) Your SMTP server blocks the mailings because it thinks they're spam because there are more individual emails sent per unit time than the SMTP administrator set as the cuttoff for protection. The workaround is to limit the number of emails per batch and also make a longer delay between batches. The best is to talk to the admin and ask for how it's set up/create an exception if possible.

Cheers, Boris

Before you limit the rate of outbound email (and try again), I would definitely try to figure out the reason behind the bounces. If you can’t get the bounce emails and read them (or if the bounce happened at the SMTP level), you need to figure it out from the mailserver’s logs.

Note: If this bounce condition turns out to be something that can be automatically deducted from the bounce emails, we’d love to get some info on this so future CiviCRM versions can have something more specific than ‘Unknown bounce type’.

I am getting the same bounce problem since upgrading to Civi 3.1.1

All my emails to my own account bounce no matter what. I thought it was a gmail thing but I tested other gmails address and it works for some and not for others.

I can change my email to hotmail or anydomain on my account page and anything attached to my account bounces. I tried sending a mailing and 3/4 of all emails bounced. I have been using civimail to do mailings twice a month for the last year and the whole thing has come apart since the 3.1.1 upgrade....

Jacob Lee

That file completely broke the mail system now I only get a blank sceen.

Running Joomla 1.5.15 and  Civi 3.1.1

J

I'm having this same problem on CiviCRM 3.0.2 - about half of the emails bounce with the unknown bounce type error. I replaced the Job.php file with the one you linked to, but when I sent out a new mailing, more than half of them still bounced. Any ideas on why it's still not working?

Thanks

I can confirm that this fix works as well...

Has it been confirmed that the emails noted as bounced actually haven't been delivered?

Yes, the bounces were because the addressees were not considered valid (and so the emails weren’t even sent to the localhost server).

My understanding is that the issue is fixed in 3.1.2. It would be great to confirm this as I'll update CiviCRM on the weekend when the site is quiet and then try to send next week's newsletter with CiviMail.

This should work as expected.