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Topic: Email delivery slow

==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version .9
- Deployed with iRedMail Easy or the downloadable installer?
- Linux/BSD distribution name and version:  CentOS 7
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL
- Web server (Apache or Nginx): Nginx
- Manage mail accounts with iRedAdmin-Pro? No
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====

I have installed  iRedMail and so far I like it, but delivery is really slow. Right now I am not sure how to diagnose if the issue is Clam or the SPAMFilter. It currently can take up to 30 minutes to deliver an email. Any guidance would be helpful.

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Re: Email delivery slow

30 minutes is unexpected.

- How much RAM does this server have? At least 2 GB is required for a low traffic mail server, and 4GB will make it more stable.
- Did you send a lot emails like newsletters or marketing emails in a short time?

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