Am 29.01.2014 23:58, schrieb Dennis Putnam: > Thanks for the reply. Keep in mind this is not a new installation. This > has been working until recently and still works for servers requiring > authentication other then smtp.att.yahoo.com. Clearly something must > have changed for that particular server. > > I thought I posted postconf output earlier but here it is again: > > $ postconf -n smtp_sasl_auth_enable ... > smtp_sasl_auth_enable = yes$ > smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd$ > smtp_sasl_security_options = $ > > TLS is indeed set via > > $ postconf -n smtp_tls_policy_maps > smtp_tls_policy_maps = hash:/etc/postfix/tls_policy > > The entry in that file is set to: > > smtp.att.yahoo.com may
you may need transports with port 587 to that server and whereever you "talk about that host" you need to do it the same way (transports, smtp_sasl_password_maps...) like below as said: nobody needs to accept smtp-auth on port 25 which is the standard port if MTA's are talking with each other while MUA's should use port 587 and these are typically clients doing authentication as also said: a good reason is to avoid dictionary attacks on port 25 at all, few to zero bots for now try to deal with 587 and so fail __________________________________ the [] are to avoid MX looksups! [smtp.att.yahoo.com]:587
