sendmail problem

[hanyyu1]

I use the sendmail to send out the mail from unix-base server to the mail server , I found that sometimes when the sendmail service is not start , then if a mail is through the sendmail service , it will be lost , I check that the "/var/spool/mqueue" directory is empty and also can't send again by "mailq' , could suggest where is the "dead" is stored ? thx

mailq
/var/spool/mqueue is empty
Total requests: 0

[hanyyu1]

If I want to temporaily disable the sendmail and store the mail to a place ( let me check the content of the mail first ) , is it possible ? thx

[RAC_1]

dead letters are stored in home directory of a user.

[hanyyu1]

may be I explain what I want , if in case the sendmail daemon is not start , then the mail will be lost ( if use mail are send by sendmail ) , how to get back these mails ? thx

[hanyyu1]

May be I make the question clear , I just want to find the mail that are lost in the sendmail daemon shutdown period , where can I find it ? thx