Redmine

(Just trying to help although I am not sure I really can.)

or creating news ... takes a lot of time

Is news creation associated with email sending? If not, then your issue is not related to email sending.

You have to trace your application and see what happens and when (watching the logs in ./log/ may help).

One particular source of delays (more often than not) for me has been misconfigured DNS. A network operation (like finding the SMTP server IP address) forces the system to query the DNS and after that times out, it manages to get the correct IP somehow, but a delay has been created. So checking and testing how your DNS works seems a good idea to me.

Hope to be of help,
yassen

Hi yassen

thanks for your answer.

We also presume that the problem is caused by misconfigered DNS or bad mail configuration. I hoped that somebody has also a same problem and came up with a solution like a background job for sending emails.

But as you proposed, I think I will go spending some time to check and test our DNS at first.

by
marco

My mail server is within the same local area net and sending mails is absolutely instant.

What is your configuration? I can advice you in setting up a local SMTP server that, even if not legitimate, may know a legitimate mail exchanger (and the mail exchanger needs to know it as well) and your problem will be solved (if THAT is your problem at all).

Let me know if I can be of any further help.
yassen

Some providers use a spam defense strategy called grey listing that delays accepting mails.
Just another thing to check if it applies to your context.

I experience the same problem. My SMTP server is at the same local network.
I tried to use IP address instead of domain name, but it didn't help.

What can I do to diagnose the problem?

The poblem solved. It actually was in misconfigured DNS.
Now all emails are fast :)