Postmaster

Your Guide to Postmaster Issues at PCCC

Postmaster

Postmaster Info

This postmaster page contains important information for mail administrators sending email to customers of PCCC’s Raptor Email Security.

Peregrine Computer Consultants Corporation

10311 Cascade Lane

Fairfax, VA 22032

Please contact postmaster <at> pccc.com to report any technical or abuse issues.

In particular, PCCC requires valid, non-dynamic reverse pointers and a valid MX record or implicit A record for email sent to our network.

PCCC RBL

How does it Work?

We try and only add domains when the evidence is overwhelming and points to a culture or architecture prone to spaminess. This can include services that have legitimate and illegitimate users; servers for legitimate firms that are compromised; and hosting firms which fail to have adequate anti-spam procedures.

How to use it with Apache SpamAssassin?

The lists have high scores which we believe are consistent with the veracity of the research used to compile the lists.

Additionally, we ONLY use this RBL to improve our scoring and it is not used to block emails outright. However, your mileage may very and you might want to seriously dial down the scores especially if you do block/reject/blackhole emails.

To implement the PCCC RBL with Apache SpamAssassin, use the RBL rules as defined in the KAM Ruleset.

Testpoints

You can use a testpoint by adding “.multi.pccc.com”. For instance, badbadbadbadbadspammer.com.multi.pccc.com. For bad freemail, hash the address with MD5 first.

  • Bad URI –
    badbadbadbadbadspammer.com
  • Ignore URI –
    ignoreignoreignoretestpoint.com
  • Marketing URI –
    marketmarketmarkettest.com
  • Bad Attachment – 194ba3ea5679ada465b2daeaf7561ccbb24b328a
  • Good Attachment – 26a0edef4b1a4d523ebd0f98e595f96ca777c9db
  • Ignore Attachment – 03d8fb85556edf397d8afcafc0b13f11ecbde50c
  • Bad Freemail –
    badbadbadspammer@gmail.com
  • Bad NS –
    ns123456.imaspammer.net

Reasons for Being Listed on PCCC’s RBL

PCCC’s RBL lists not just bad content, but good content as well. See below for possible causes for listing on PCCC’s RBL.

Bad URIs

URIs in this category are common senders of spam, and should be scored as an indicator of spam. 

Marketing URIs

URIs in this category send large amounts of marketing email, and should be scored very lightly as an indicator of spam. 

Ignore URIs

URIs in this category have no correlation with spam or ham, and should never be scored. 

Bad Attachments

Attachments in this category are commonly used in spam, and should be scored as an indicator of spam. 

Attachments to Ignore

Attachments in this category are commonly used for both spam and non-spam purposes, and should not be scored at all. A common example of an attachment in this category is logos from social networking websites. 

Good Attachments

Attachments in this category are used almost exclusively for non-spam purposes, and should be scored as a negative indicator of spam. 

Good Freemail

Freemail addresses in this category are used almost exclusively for non-spam purposes, and should be scored as a negative indicator of spam. 

Bad Freemail

Freemail addresses in this category are used almost exclusively for spam purposes, and should be scored as an indicator of spam.

Bad Nameserver

Nameservers in this category are used almost exclusively for spam purposes, and should be scored as an indicator of spam.