Re: postfix sasl denials

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chcon -t postfix_smtpd_tmp_t /var/tmp/smtp*

Should fix the problem.


On 03/25/2014 08:29 AM, Natxo Asenjo wrote:
hi,

when trying to relay e-mail using SASL authentication on a ipa centos domain I get this this on audit.log:

type=AVC msg=audit(1395749719.107:875): avc:  denied  { unlink } for  pid=4229 comm="smtpd" name="smtp_89" dev=dm-0 ino=265669 scontext=unconfined_u:system_r:postfix_smtpd_t:s0 tcontext=unconfined_u:object_r:user_tmp_t:s0 tclass=file
type=AVC msg=audit(1395749719.109:876): avc:  denied  { getattr } for  pid=4229 comm="smtpd" path="/var/tmp/smtp_89" dev=dm-0 ino=265669 scontext=unconfined_u:system_r:postfix_smtpd_t:s0 tcontext=unconfined_u:object_r:user_tmp_t:s0 tclass=file
type=AVC msg=audit(1395749719.109:877): avc:  denied  { unlink } for  pid=4229 comm="smtpd" name="smtp_89" dev=dm-0 ino=265669 scontext=unconfined_u:system_r:postfix_smtpd_t:s0 tcontext=unconfined_u:object_r:user_tmp_t:s0 tclass=file
type=AVC msg=audit(1395749719.110:878): avc:  denied  { getattr } for  pid=4229 comm="smtpd" path="/var/tmp/smtp_89" dev=dm-0 ino=265669 scontext=unconfined_u:system_r:postfix_smtpd_t:s0 tcontext=unconfined_u:object_r:user_tmp_t:s0 tclass=file


de local user postfix is indeed id 89. In /var/tmp/smtp_89 I have the kerberos ticket that the relay server is using (smtp/testsmtprelay.sub.domain.tld@xxxxxxxxxxxxxx)

$ sudo ls -Z /var/tmp/
-rw-------. root    root    system_u:object_r:krb5_host_rcache_t:s0 host_0
-rw-------. postfix postfix unconfined_u:object_r:user_tmp_t:s0 smtp_89

if i set selinux in permissive mode, I may relay using sasl, otherwise it gets blocked.

Any clues on how to fix this to keep selinux enabled?

TIA,

--
Groeten,
natxo


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