Hi!

We are using Postfix 2.5.4 with success. Thanks  ;-)

My question is:

We have many students who send emails to mispelled domains, as:
hotmmail.com, hotmial.com, hotmail.cm ...

I know that I can try to find all individual combinations
and write them in some reject file to be used in check_recipient_access

Is there some way to define a rule based on phonetic
or another solution which detect mispelled words ?

Many of those mispelled domains also gives:
(Host or domain name not found. Name service error for name=htomail.com type=MX: Host not found, try again)
                                        x...@htomail.com

I also try to reject them at that level but they are still going in my deferred queue

smtpd_recipient_restrictions =
       reject_non_fqdn_recipient
       reject_unknown_recipient_domain
       permit_mynetworks
       permit_sasl_authenticated
       reject

smtpd_sender_restrictions =
       permit_mynetworks
       reject_non_fqdn_sender
       reject_invalid_hostname
       reject_unauth_pipelining
       reject_unknown_sender_domain
       reject_unlisted_sender

Thanks,
Eddy
--

Eddy Beliveau
HEC Montreal
Montreal (Quebec)
Canada

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