Jack Bailey wrote: >> None of this is true for callouts. We are forced to expend server >> resources in handling callouts. Our ability to receive our own >> email is impaired by other people's use of callout verification. >> (How well would your mailserver stand up to receiving four orders >> of magnitude more connections per second than it should?) >> > > Verizon did this to me once. A spammer was forging one of my domainnames > in a spam run so VZ was issuing 70-100 callouts/second to my server. I > had no usable mail service for hours, so I blacklisted their callout > farm. Then they blacklisted me for blacklisting their callouts. >
Exim caches callouts and probably should have some other features to limit callouts to a specific server so as not to overwhelm them. I don't know of any Exim servers who have loaded another server because of callouts. > > -- ## List details at http://www.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://www.exim.org/eximwiki/
