On Tue, 2011-06-14 at 00:24 -0400, Phil Pennock wrote: > You're using sender *callout* verification to systems not under your > administrative control.
Really? Not necessarily. Using "deny !verify = sender" results in: RCPT TO:<[email protected]> 550-Verification failed for <[email protected]> 550-Unrouteable address 550 Sender verify failed for a non-existent sender domain, without callouts. The log message is: 2011-06-14 20:56:19 H=[hostname] [ip address] I=[interface]:25 F=<[email protected]> rejected RCPT <[email protected]>: Sender verify failed That looks suspiciously close to identical to the OP's problem, doesn't it? So, allowing for that, let's say that there was possibly a transient DNS error which meant that the MTA in quuestion could not look up the sender domain. Religion, pfft. Let's deal with it scientifically, please. Graeme -- ## List details at https://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
