nanog mailing list archives
Re: incorrect spam setups cause spool messes on forwarders
From: Michael.Dillon () radianz com
Date: Tue, 2 Dec 2003 09:50:20 +0000
Also imagine your domain being joe-jobbed. You, as an innocent
bystander,
then get hammered by Verizon as they try to do a lookup on possibly millions of incoming mails.
Why on earth would Verizon need to do the lookup once per incoming email? If they need to verify that a given MX does indeed exist and is reachable and is running an SMTP server, then why not cache that info for some reasonable time period, say an hour, to avoid disrupting everyone else's Internet. Coupled with that caching, they could reasonably make a few tries over the space of 3 to 5 minutes before giving up on the incoming email by sending 450s. And if they are going to do something like this which imposes a requirement on other ISPs, i.e. your MX must point to a live SMTP server, and which impacts other ISP's mail operations, i.e. we will send you 450s, then why can't they *PUBLISH* what they are doing. NANOG seems an appropriate place for this. --Michael Dillon
Current thread:
- Re: incorrect spam setups cause spool messes on forwarders, (continued)
- Re: incorrect spam setups cause spool messes on forwarders Valdis . Kletnieks (Dec 01)
- Re: incorrect spam setups cause spool messes on forwarders Randy Bush (Dec 01)
- Re: incorrect spam setups cause spool messes on forwarders Paul Vixie (Dec 02)
- Re: incorrect spam setups cause spool messes on forwarders Jared Mauch (Dec 01)
- Re: incorrect spam setups cause spool messes on forwarders Michael Lewinski (Dec 01)
- Re: incorrect spam setups cause spool messes on forwarders Daniel Roesen (Dec 01)
- Re: incorrect spam setups cause spool messes on forwarders John Brown (CV) (Dec 02)
- Re: incorrect spam setups cause spool messes on forwarders Daniel Roesen (Dec 02)
- Re: incorrect spam setups cause spool messes on forwarders Randy Bush (Dec 02)
- Re: incorrect spam setups cause spool messes on forwarders Paul Vixie (Dec 02)
- Re: incorrect spam setups cause spool messes on forwarders Daniel Roesen (Dec 01)
- Re: incorrect spam setups cause spool messes on forwarders Valdis . Kletnieks (Dec 02)
- Re: incorrect spam setups cause spool messes on forwarders Suresh Ramasubramanian (Dec 02)
- Re: incorrect spam setups cause spool messes on forwarders Richard Cox (Dec 02)
- Re: incorrect spam setups cause spool messes on forwarders Suresh Ramasubramanian (Dec 02)
- Re: incorrect spam setups cause spool messes on forwarders Valdis . Kletnieks (Dec 02)
- Re: incorrect spam setups cause spool messes on forwarders Suresh Ramasubramanian (Dec 02)