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Thu, Jan 05, 2017 4:02 pm

Email stuck in the sendmail queue

A user repoted that she didn't receive an email someone sent her today. I checked the /var/log/maillog file to see if the mail server, which is running Sendmail, received the email. When I searched on part of the sender's email address, I saw the message had been received by the mail server:

# grep sbear /var/log/maillog
Jan  5 14:08:08 moonpoint sendmail[6276]: v05IxmvR006276: from=<sbearab1@y0hoo.c
om>, size=2339942, class=0, nrcpts=1, msgid=<1226622358.574156.1483642780691@mai>, proto=ESMTP, daemon=MTA, [98.138.

So I checked Sendmail's queue with the mailq command and saw the message was stuck there. Note: Mailq is identical to sendmail -bp .

# mailq
                        /var/spool/mqueue (1 request)
-----Q-ID----- --Size-- -----Q-Time----- ------------Sender/Recipient-----------
v05IxmvR006276  2338155 Thu Jan  5 14:08 <>
                 (host map: lookup ( deferred)
                Total requests: 1

The sendmail queue can be flushed with the command sendmail -q -v .

#  sendmail -q -v

Running /var/spool/mqueue/v05IxmvR006276 (sequence 1 of 1)
<>... aliased to ann
ann... Connecting to local...
ann... Sent
# mailq
/var/spool/mqueue is empty
                Total requests: 0

The meaning of the -q and -v options to the sendmail command are shown below:

              Process saved messages in the queue at given intervals.  If time
              is  omitted,  process the queue once.  Time is given as a tagged
              number, with `s' being seconds, `m' being minutes (default), `h'
              being  hours, `d' being days, and `w' being weeks.  For example,
              `-q1h30m' or `-q90m' would both set  the  timeout  to  one  hour
              thirty  minutes.   By  default,  sendmail  will run in the back-
              ground.  This option can be used safely with -bd.

      -v     Go into verbose mode.  Alias expansions will be announced, etc.

[/network/email/sendmail] permanent link

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