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1 edit | reply to phonebuff
Re: [Services] Sendmail outbound on mail.atl.bellsouth.netsaid by phonebuff :
Thanks !!!
I had tried that but without the [] on it. Now I need to find my sendmail book and read up on what the brackets do .. Been way to long since I played with this..
Thanks again --
Without the brackets, sendmail does a DNS lookup for the associated MX record. The mail.bellsouth.net servers do not accept relaying on their MX servers, only on the SMTP server. The brackets will force an A record lookup instead of an MX record lookup.
The MS SMTP service has a similar problem, but it does not support [brackets] around a hostname, so I had to create a local hostname with A records in my DNS server that point to the IP addresses used by mail.bellsouth.net, and use that local hostname for the smart host relay for my MS SMTP server. That would also work for sendmail, but since it does accept [brackets] around the hostname, it would be more work than needed.
Here are some DNS query results to show what I mean:
;; QUESTION SECTION:
;mail.bellsouth.net. IN ANY
;; ANSWER SECTION:
mail.bellsouth.net. 5874 IN MX 0 mx01.mail.bellsouth.net.
mail.bellsouth.net. 5874 IN MX 0 mx00.mail.bellsouth.net.
mail.bellsouth.net. 7091 IN A 207.115.11.17
mail.bellsouth.net. 7091 IN A 204.127.217.17
------------------------------------------------------------------
;; QUESTION SECTION:
;att-mail.dcs-net.net. IN ANY
;; ANSWER SECTION:
att-mail.dcs-net.net. 3601 IN A 204.127.217.17
att-mail.dcs-net.net. 3601 IN A 207.115.11.17
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