King Edward VII and Queen Mary School - Postmaster

Welcome to the KEQMS postmaster site. This site will give details about our MX systems and contact details.

All information here is relevant for the domains keqms.com, keqms.co.uk and keqms.net.

Inbound mail delivery

List of Bounce errors generated by our servers

For inbound email, the following requirements must be satisfied for our MX systems to accept the RCPT TO: address. Many ISPs require valid reverse DNS before they will accept mail from a sending MTA (including AOL).

Your sending MTA must have reverse DNS set up.
RFC1912 section 2.1 states that every Internet-connected host should have valid PTR and A records. PTR records must also point back to a valid A record, rather than an alias defined by a CNAME.
If you receive and transmit SMTP on different IP addresses, make sure they ALL have valid PTR/A records configured.
Your MTA's reverse DNS address must resolve back to your IP address
Your MAIL FROM: address must be a valid e-mail address, to which we can send mail (i.e. it will be verified)
The RCPT TO: address must be a valid user on our systems

We also use several DNS black lists, and content-based filtering.

Mail which is deemed to be above the higher spam confidence level (SCL) is rejected with response code 550
Mail which is deemed to be below the higher SCL but above the lower SCL is delivered but placed in Junk E-mail folders
Mail which is deemed to be below the lower SCL is delivered normally

Outgoing mail

Outgoing mail for all our domains will only originate from vps1.keqms.net [95.154.196.54] and vps2.keqms.net [95.154.192.23]

Bounce Errors

550 Reverse DNS and matching forward DNS is required to contact this domain.
Check that you have valid Reverse DNS set up for the IP address your mail server connects out on, and also that it resolves back to you
550-Verification failed for <sending-address@domain>
550-Unrouteable address
550 Sender verification failed
We could not verify the sending email address. Check that it exists and that valid MX records are on the domain.
550 User does not exist
The user you are trying to mail does not/no longer exists.
550-You are not permitted to send mail to this host. Please see
500 http://postmaster.keqms.co.uk/ (Lx)
Your IP address is listed on a block list (L1 to L6). If you are not a sender of spam, please contact us to find out which list(s) and why.
550 This message scored x.x spam points.
The message was identified as spam and has been rejected.

Contact

By e-mail: postmaster@keqms.co.uk
By telephone: 01253 784100 and ask for IT department
www.keqms.co.uk