Mailserver help
I've rebuilt the mailserver in CWP multiple times, but for some reason it still takes hours to send one email and that email ends up in spam.

Can anyone advise?
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Before rebuild your mail server, have you set the Reverse DNS?

1- Create an A record on your domain, name it (for example) mx, point it to your server's IPv4 address.
2- a. If you are using SolusVM, click in Neteork tab, click on Edit RDNS. Name it with the A record you have created before; or
2-b. Virtualizor, just click on the Reverse DNS link on your left-side panel. Name it with the A.

Wish it may help.
Thank you FreeVPS and ZXPlay for VPS 7 and 19

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Don't PM me for support, use an appropriate forum to ask for support
I'd recommend to open a help topic about the delays in the CentOS Web Panel forum.

In order to send mails successfully (not going into spam) you need to have the following things setup:
- correct rDNS setup (many e-mails go straight to spam due to wrong rDNS for the IP address of the mail server)
- SPF must be setup correctly (to prevent/detect e-mail spoofing and allow e-mail sending from only)
- DKIM is also recommended (signing e-mails with DKIM helps to avoid getting into spam folder)
- mail server should not be an open relay (those get instantly abused for sending thousands of spam mails once found to be an open relay)
- IP address of mail server shouldn't be blacklisted anywhere (this is a bit tricky - providers like Outlook and Google Mail have their own internal blacklists)

I'd personally say that setting up a really working and safe e-mail server is about the hardest part.

You can use to see what may be wrong with your setup. And those are also useful: and

You can run a remote mail server diagnostics with:

Blacklist check:

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