>I would guess it is either a DNS issue (where some part of your DNS or
>your ISPs DNS is setup wrong causing lookups to fail, etc.).

heh heh, never guessed the ol' keyboard trick, eh? :-)

>  Or.. more
>than likely, the ISP uses an MTA that does a auth (ident) check. This
>means their mail server will try to connect to yours on port 113 to see
>who is running the mail processes.

This one is more interesting to me. These days, how common are MTAs 
that do this check? Is ident one of those services that 
security-conscious admins are always saying to turn off, or is that 
advice overkill?

>  This can be especially slow if you have
>a fireall or something that simply drops packets destined for that port
>(instead of instantly replying with a port closed message).

I might can understand why dropping packets doesn't help the 
situation, but does the "instant reply with a port closed message" 
cause the checking MTA to be satisfied and proceed at speed?

>There are a number of ident daemons for the Mac. I actually just run the
>old "Daemon" from Peter Lewis (of Anarchie/Interachie fame).

Sounds like a recommend. I expect the security implications for Mac 
are relatively low, as is typical?


Stefan Jeglinski

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