Handling ISP messages and rules

[jason]

Here are some ISP rules we should account for when sending email.


ISP rules
Yahoo:
Bounce backs : 2 reasons address not valid, account is full
Yahoo practices deprioritization of ips based on bounces.
http://help.yahoo.com/help/us/mail/defer/defer-03.html
http://help.yahoo.com/help/us/mail/defer/defer-01.html
http://help.yahoo.com/help/us/bizmail/spam/
Delayed:
Dec  6 21:50:27 gmckayiponly postfix/smtp[9606]: B3FA4F4073: to=<LILSHAHEIM20022002@YAHOO.COM>, relay=mx2.mail.YAHOO.COM[67.28.114.35], delay=3565, status=deferred (host mx2.mail.YAHOO.COM[67.28.114.35] said: 451 mta143.mail.dcn.yahoo.com Resources temporarily unavailable. Please try again later [#4.16.5]. (in reply to end of DATA command))
Rejected:
Nov 28 12:45:23 gmckayiponly postfix/smtp[24230]: 74E0BF407B: to=<ZYASIA2002@YAHOO.COM>, relay=mx3.mail.YAHOO.COM[64.156.215.18], delay=2177, status=deferred (host mx3.mail.YAHOO.COM[64.156.215.18] said: 451 mta350.mail.scd.yahoo.com Resources temporarily unavailable. Please try again later. UP Email not accepted for policy reasons.  Please visit http://help.yahoo.com/help/us/mail/defer/defer-04.html [#4.16.4:170]. (in reply to end of DATA command))

MSN:
http://postmaster.msn.com/cgi-bin/dasp/postmaster.asp

AOL:
2 Most common errors are :
554 HVU:B1
http://postmaster.info.aol.com/errors/554hvub1.html
There is at least one URL in your e-mail that is generating substantial complaints from AOL members. 
554 RLY:B1
http://postmaster.info.aol.com/errors/554rlyb1.html
This error message is a dynamic block on our system. Dynamic blocks are placed on an IP address when AOL member complaints go over our set threshold. These are automated blocks that are removed by the system within 24 hours if the complaints are below the threshold. 
Complete list of errors:
http://postmaster.info.aol.com/errors/

Outblaze.com:
A common spam fighting agency, will block emailing ip and sometimes domain names.
Mx will look like example relay=blackplanet-com.mr.outblaze.com
Errors:
550 : Inactive user/User unknown
554: EMail from mailserver at 192.168.1.2 is refused. See http://spamblock.outblaze.com/192.168.1.2

http://spamblock.outblaze.com/

Default:
Currently many ISPs will sent a url message back in the response these should be captured and sent or placed somewhere to notify the postmaster to take action.
Log example:
Nov 10 22:50:15 gmckayiponly postfix/smtp[4272]: BA175F407C: to=<qyl8199@sina.com>, relay=sinamx.sina.com.cn[202.108.3.188], delay=9, status=bounced (hostsinamx.sina.com.cn[202.108.3.188] said: 554 Please visit http://antispam.sina.com.cn/denyip.php?IP=192.168.1.1 (#5.7.1) (in reply to RCPT TO command))