sending mail from sendmail is very slow!!!!

[m.roth at 5-cent.us]

raj sourabh wrote:
> Well.. Right now the DNS ip addresses are only on resolve.conf..
>
> Do i have to put the IP entries of target servers eg. gmail, exhange
> serves in the /etc/hosts file??
>
> Else where should i specify the DNS entries to sendout the mail fatster..
>

Um, no, the DNS IP addresses are not in resolv.conf, what's in there are
your nameservers, and maybe a search domain. You may have to either prune
your mailing lists, and find the bad addresses, or send it in batches.

One place I worked, we used some queue manager.

      mark

> Thanks for help.
>
> Raj
>
> On Tue, Jul 31, 2012 at 6:12 PM, <m.roth at 5-cent.us> wrote:
>
>> Jonathan Billings wrote:
>> > On Sun, Jul 29, 2012 at 1:16 PM, raj sourabh <rajsourabh1 at gmail.com>
>> > wrote:
>> >
>> >> I am using a sendmail for sending alerts and notification from RHEL
>> >> server 5.5. But the sendmail process is very slow and it takes around
>> 2
>> minutes
>> >> to complete.
>> >>
>> >> Is there any way i can make it faster?
>>
>> > First, I hope you're running with the latest updates, and not really
>> RHEL
>> > 5.5.
>> >
>> > It's not really possible to know exactly what is wrong from these
>> somewhat
>> > vague details, but I suggest looking at your DNS settings,
>> particularly
>> > for the hosts running sendmail.  As a quick guess: Sendmail is very
>> picky
>> > about DNS and if you are using any host names that don't resolve, it
>> can
>> take
>> > longer than it would otherwise.
>>
>> If it's still that way, I'll second that - about 5 years ago, I had
>> someone sending out email via a mailing list, and it was seriously
>> ridiculous - many, many minutes, because of screwy recipient addresses.
>>
>>        mark
>>
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