php - How to handle "Domain of sender address ee@e.com does not exist" error exception -


i want make message "domain of sender address ee@e.com not exist" shows client instead of debug error. how can make it?

in default, following debug error message show.

swift_transportexception expected response code 250 got code "553", message "553 5.1.8 <ee@e.com>... domain of sender address ee@e.com not exist " 

i want make error message shows client tell them email address not exists, please try others. how handle error message?

the receipent e-mail server run series of tests determine legitimacy of sender e-mail server , sender e-mail addresses server trying send.

the usual tests include reverse dns match, spf record match, clean dnsbl, , of course domain must exist.

the receipent e-mail server can -- , -- refuse e-mails if 1 or more of tests fail.


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