Date: Sat, 23 May 2015 11:08:41 +0200 From: Andrea Venturoli <ml@netfence.it> To: questions@freebsd.org Subject: Troubles with sendmail Message-ID: <55604399.2070404@netfence.it>
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Hello. Not sure if this is the right place to ask (maybe ports@? Sendmail's support? Cyrus IMAP mailing lists?). I'm experiencing a strange problem with an MX server (9.3 with sendmail+tls+sasl2+ldap-8.15.1_2) which uses the cyrusv2 mailer to store mail on another server (9.3 with cyrus-imapd23-2.3.18_10). This is what I think is the relevant part of sendmail's MC config file: > define(`CYRUS_MAILER_FLAGS',`A5@w') > define(`CYRUSV2_MAILER_FLAGS',`A5@w') > define(`confLOCAL_MAILER', `cyrusv2') > define(`CYRUSV2_MAILER_ARGS',`TCP [mail.localdomain] lmtp') > MAILER(`cyrusv2') From time to time some message is delayed and a warning bounce is generated with the following: > Deferred: Name server: mail.localdomain.: host name lookup failure Since this is utter nonsense (mail.localdomain is always resolvable), I investigated a bit and found out that what the above really means is that one of the recipient's domain (not *my* recipient) cannot be resolved. An example might clarify: _ a message is sent to user@mydomain.it and to user@otherdomain.it; _ of course it arrives at my server (MX for mydomain.it); _ but ir won't reach its mailbox (user@mydomain.it) since otherdomain.it does not resolve properly. I understand I'm sort of asking for a shot in the dark, but believe me, I've been hitting my head on this for a long time and I cannot understand what the cause may be. Of course I tried many searches on the web, but perhaps I cannot guess the correct terms to search for. Any idea? bye & Thanks av.
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