Effective August 15th, we will be closing the EVE-Central SMTP market push service (http://dev.eve-central.com/evec-api/start#mail_smtp_push).
While the SMTP service has reliably been trucking since 2006, better things have come and made the SMTP service seem like a rusty wheel. Specifically the EVE Market Data Relay: http://eve-market-data-relay.readthedocs.org/en/latest/index.html. I advise everyone currently using the SMTP service to migrate to EMDR as soon as possible.
Currently, the SMTP push service is consuming over 1TB of transfer per month. EMDR is more modern and more efficient.
As part of the migration to EMDR, we will consolidate all of our classic client traffic to relay to EMDR.