On 24 February 2010 07:51, Jaco Meintjes <[email protected]> wrote: > Hey Guys, I've got a strange one: Some of our machines running Outlook / > Outlook Express looks like they're simply not sending authentication to Exim > (and it's doing this on about 40% of the Outlook users). For example on one > of these machines I decided to load Here's a log > example: > > 2010-02-23 12:46:45 H=dsl-245-216-168.telkomadsl.co.za (RuanVanWykPC) > [41.245.216.168] F=<[email protected]> rejected RCPT > <[email protected]>: Invalid HELO (RuanVanWykPC).
This error indicates your Exim rejected the HELO issued by the client - which is before the client tries to authenticate. Make use of 'exim -bh IP' which will help show you where your HELO problem is occurring and why (hint: have a look at your config for the acl_smtp_helo acl and any other conditions that might have 'verify = helo' set somewhere). Also beware of restrictive helo/ehlo checks on an outbound relay server. .warren -- ## List details at http://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/
