>We've been using IMail 4.07 for a long time, and have been so happy we've
>never upgraded.  Recently, we needed to use the listserv feature for the
>first time.  For most addresses in the listserv mailing list, it works fine.
>However, for AOL address, plus a few others, the message bounces.  Can
>anybody help?

sure

>10:20 10:15 SMTP-(0000025F) >HELO mail.salemorrotary.org
>10:20 10:15 SMTP-(0000025F) 250 salemcomputer.net Hello [208.8.150.202],
>pleased to meet you
>10:20 10:15 SMTP-(0000025F) >MAIL
>From:<[EMAIL PROTECTED]>
>10:20 10:15 SMTP-(0000025F) 501
><[EMAIL PROTECTED]>... Sender domain must exist
>10:20 10:15 SMTP-(0000025F) ERR undeliverable 501
><[EMAIL PROTECTED]>... Sender domain must exist

"sender domain" is the "MAIL FROM:<sender@senderdomain>"

so let's look it up:

# dig mail.salemorrotary.org

; <<>> DiG 8.2 <<>> mail.salemorrotary.org
;; res options: init recurs defnam dnsrch
;; got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 4
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
;; QUERY SECTION:
;;      mail.salemorrotary.org, type = A, class = IN

;; AUTHORITY SECTION:
salemorrotary.org.      59m45s IN SOA   bcw4.bcwebhost.net. 
administrator.bcwebhost.net. (
                                         7               ; serial
                                         1H              ; refresh
                                         10M             ; retry
                                         1D              ; expiry
                                         1H )            ; minimum

sure enough, no A or MX record for "mail.salemorrotary.org".

>10:20 14:53 SMTP-(00000243) >HELO mail.salemorrotary.org
>10:20 14:53 SMTP-(00000243) 250 rly-yb03.mx.aol.com OK
>10:20 14:53 SMTP-(00000243) >MAIL From:<[EMAIL PROTECTED]>
>10:20 14:53 SMTP-(00000243) 550 REQUESTED ACTION NOT TAKEN: DNS FAILURE
>10:20 14:53 SMTP-(00000243) ERR undeliverable 550 REQUESTED ACTION NOT
>TAKEN: DNS FAILURE
>10:20 14:53 SMTP-(00000243) SMTP_DELIV_FAILED
>10:20 14:53 SMTP-(00000243) >QUIT
>
>I have no idea what causes this message.

550 REQUESTED ACTION NOT TAKEN: DNS FAILURE  is complaining for the 
same reason as the first case above, but with a stupidly useless 5xx 
msg. "dns failure" means they tried to validate via DNS 
mail.salemorrotary.org for A and/or MX records and couldn't.



>Here is the configuration we're dealing with:
>
>IMail runs on an NT Server with several IPs.  The computer's primary IP is
>208.8.150.202 (for servername.bcwebhost.net).  The IMail IP is 208.8.150.204
>(mail.bcwebhost.net).  We have several IMail virtual domains, such as
>mail.salemorrotary.org.  The DNS records for these point to
>mail.bcwebhost.net (208.8.150.204).

As I showed above, you're missing records for mail.salemorrotary.org

>Note that this seems to only effect the list server, possibly because that
>mail originates from that server.  Normal mail is delivered to AOL, etc.
>just fine.

not if the sender domain was also "mail.salemorrotary.org"

>I know I've seen this discussed in this list before.  Can anyone tell me
>what I've got configured wrong?

go here: http://bind8nt.meiway.com/itsaDNSmess.cfm

Your solution is there.

also, you may want to change your default mail hosts from

mail.salemorrotary.org with mailhost alias of salemorrotary.org

to mailhost of

salemorrotary.org with mailhost alias of mail.salemorrotary.org

How to do that is in the KB.

In DNS, in the salemorrotary.org zone:

salemorrotary.org.         MX 1O  imail.BCwebhost.net.
mail.salemorrotary.org.    MX 1O  imail.BCwebhost.net.

salemorrotary.org.         A ip.ad.re.ss  ; of www.salemorrotary.org
mail.salemorrotary.org.    A ip.ad.re.ss  ; of imail


Len

http://BIND8NT.MEIway.com: ISC BIND 8.2.2 p5 & 8.2.3 T6B for NT4 & W2K
http://IMGate.MEIway.com:  Build free, hi-perf, anti-spam mail gateways

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