Tertiary-mx: Difference between revisions

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Revision as of 08:33, 8 September 2016 (view source) AA-Andrew (talk \| contribs) m (→‎etrn) ← Older edit		Revision as of 13:42, 16 June 2020 (view source) AA-Andrew (talk \| contribs) mNo edit summary Newer edit →
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<indicator name="Faults">[[File:Menu-email.svg\|link=:Category:Email\|30px\|Back up to the Email Category]]</indicator> <indicator name="Faults">[[File:Menu-emailadd.svg\|link=:Category:Email Features\|30px\|Back up to the Email Features Category]]</indicator> tertiary-mx.co.uk is our backup email server. It will accept email for a domain we handle email for and will queue messages and will attempt to deliver to the higher priority MX record. Invalid HELO Recipient domain is not one we handle email for Message size is over ~~1Gb~~1GB. The server will 'greylist' hosts. It will always defer (cause a temporary delivery failure) messages/connections under the following circumstances: Sending host in a DNS ~~blacklist~~blocklist Header syntax errors *Recipient rejected by the primary MX (It does a call back to the primary MX if it is available)