On 23/05/11 22:13, Graham Butler wrote: > Is the use of 'verify sender' recommended, and can anybody who has > included 'verify sender' give any feed back on any problems they have > experienced regarding rejections of legitimate emails.
I've used it since I started using Exim as it's is part of the default configure file. We've had a number of emails rejected outright that were theoretically legitimate emails, however, in every case the sender's domain had expired and my users would not have been able to reply to the messages. The sender doesn't usually know anything about the problem and the error messages turning up are the first indication that something is wrong. In terms of send attempts rejected by "require verify = sender" though, these cases are in the minority. Usually, it's either a spammer sending from a domain they think it viable for sending email, but is in fact missing the A and MX records, OR a snowshoe shop that hasn't got their DNS in order yet. Overall, yes it causes occasional wet work, but it's usually very much appreciated. Except in the case of an unnamed mining operation in outback Australia who threatened to sue the company I was working for because we had stolen their domain and we were trying to defraud them. Why else wouldn't it work and we somehow know that it was expired and they needed to go to Melbourne IT and pay $140 to renew it for 2 years. (yes, that was how much a .com.au cost at the time) (no, the accusation didn't make much sense to me either). -- ## 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/
