by dino on Jul.05, 2008, under Plesk
If you receive this error when adding a domain:
Unable to send notification: mail() failed: SMTP server response: 550 Requested action not taken: mailbox unavailable or not local
then you need to add a valid mailbox to your Plesk admin setup. To resolve this issue log into Plesk and click on:
Server
Edit (under personal information)
Replace the email address with a valid, working address.
Keep in mind this error shouldn’t prohibit you from creating a site, it is just notifying you that the “site created” email will not be sent.
by dino on Jul.05, 2008, under Uncategorized
Cpanel required ports list
| Port | Service | Protocol | Direction | Notes |
| 20 | ftp | tcp | inbound/outbound | |
| 21 | ftp | tcp,udp | inbound/outbound | |
| 22 | ssh | tcp | inbound | |
| 25 | smtp | tcp | inbound/outbound | |
| 26 | smtp | tcp | inbound/outbound | |
| 37 | rdate | tcp | outbound | |
| 43 | whos | tcp | outbound | |
| 53 | DNS | tcp/udp | inbound/outbound | Inbound only needed if you run your own DNS server |
| 80 | http | tcp | inbound/outbound | |
| 110 | pop3 | tcp | inbound | |
| 113 | ident | tcp | outbound | |
| 143 | imap4 | tcp | inbound | |
| 443 | https | tcp | inbound | |
| 465 | smtp | tcp/ssl, tcp/udp | inbound/outbound | |
| 873 | rsync | tpc/udp | outbound | |
| 993 | imap4 | ssl tcp | inbound | |
| 995 | pop3 | ssl tcp | inbound | |
| 2082 | cpanel | tcp | inbound | |
| 2083 | cpanel | ssl tcp | inbound | |
| 2086 | whm | tcp | inbound | |
| 2087 | whm ssl | tcp | inbound | |
| 2089 | cp license | tcp | outbound | |
| 2095 | webmail | tcp | inbound | |
| 2096 | webmail | ssl tcp | inbound | |
| 3306 | mysql | tcp | inbound | Only if you need to connect remotely |
| 6666 | chat | tcp | inbound |
by dino on Jul.05, 2008, under cPanel
The SMTP tweak will prevent users from bypassing the mail server to send mail (this is a common practice used by spammers). It will only allow the MTA (mail transport agent), mailman, and root to connect to remote SMTP servers. In order words, users will need to use ‘localhost’ as their SMTP server for local mailing scripts to sent mail (source). SMTP Tweak can be enabled or disabled in the ‘Security Center’ of WHM, or from command line using:
/scripts/smtpmailgidonly on|off
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