Re: [exim] Sender callout verification with warning only

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Autor: Thomas Jacob
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A: exim-users
Assumpte: Re: [exim] Sender callout verification with warning only
Maybe also consider tweaking exim's various callout caching timers?

> - maintain a list of domains you never call out to
> - do as much envelope-checking as you can before triggering a callout
> (DNSBLs, verify=sender, SPF pass, HELO sanity)
> - expect to be listed by some agressive DNSBLs
> - don't go near SPAM-L