[IMGate] Re: unknown user info lost when using multiple smtp servers
I just realized that my unknuser2recipients_bad.sh is not working on my domains that are sent to two postfix boxes(mail is first sent to my Imgate box and then the transport.map sends the message to a second box that scans for viruses), the unknown user is sent back from Imail to the virus box, but this info never makes it make back to the main Imgate box. I see the sender gets the bounce message so it must be sent back to the original Imgate box. what a mess. forget about unknown users. export the known users from the imail box to the MX. Len
[IMGate] Re: unknown user info lost when using multiple smtp servers
what a mess. I thought this was the best way to setup postfix with virusscanning. forget about unknown users. export the known users from the imail box to the MX. Some of the domains behind the virusscanner are not on Imail. -- Andrew P. Kaplan www.cshore.com We must build dikes of courage to hold back the flood of fear. Martin Luther King -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.300 / Virus Database: 265.8.6 - Release Date: 2/7/2005
[IMGate] Re: unknown user info lost when using multiple smtp servers
I thought this was the best way to setup postfix with virusscanning. forget about unknown users. export the known users from the imail box to the MX. Some of the domains behind the virusscanner are not on Imail. if the traffic isn't too big for them, then use RAV for them, and tell postfix the next hop where those recipients are verifiable: man 5 postconf address_verify_transport_maps (default: $transport_maps) Overrides the transport_maps parameter setting for address verification probes. Len
[IMGate] Re: unknown user info lost when using multiple smtp servers
Len Conrad wrote: I thought this was the best way to setup postfix with virusscanning. forget about unknown users. export the known users from the imail box to the MX. Some of the domains behind the virusscanner are not on Imail. if the traffic isn't too big for them, then use RAV for them, and tell postfix the next hop where those recipients are verifiable: snip man output Keep in mind that some mail servers accept all email for delivery at the SMTP level, and then bounce later... I looked into doing this very same thing, but all of my customers that weren't running IMail were running Exchange, and Exchange would just accept all email, so I didn't enable RAV because it would have just bloated my DB. -Russ --- [This E-mail scanned for viruses by Declude Virus]
[IMGate] Re: unknown user info lost when using multiple smtp servers
The recommendation to avoid the dictionary attacks is to turn on tarpitting. http://support.microsoft.com/kb/842851/ Does anybody have experience with Exchange smtp tarpitting when the volume of unknown recipients is 20k per hour? For different tarpit delays between 5 and 30 seconds? Len
