Dear Community,
We implemented ESA and we have found a problem in a certain situation. When a certain sender send for as a .rar file we got a plain text in the email, like this (just a little part from the full character chain):
begin 777 202006250915.zip
M4$L#!!0`"0`(`,9)V5"(YW"Q]IHJ`#U2*P`;`!P`9&]C,#8Q,C,W,C`R,#`V
M,C4Q,#$R,C(N<&1F550)``/#3O1>N$[T7G5X"P`!!.P#```$[`,``.00S=%=
M]/1^T_$>!^?HCQ\"O,\L%6ZB7[:L(S11PZM!,YN2OG2ZS+K.7F?EPG>TVG#$
MS,ISMK-72Z749)WSIX<J25,DDPIMX/XXO&Q4=SOZZX^`EYRB$^$=DTZ@`I90
M?0^7G4%WT7VY`GF[ZN?,CVR*1<5/P&XD/0:H'G1\]OH+==UU2G_P-#WHDJ_8
M$%U')LRWXNF1L3H4S@LTP@L2:P5\!OX;&B?^`)2/1)<Y*]&'7#W9?HK2H%%J
MMJ\G$=R:\$9[V0V<S+$Z0KT+^"%X,Y=7<>0\OHX,"?K`M2Q;$Q&<G/PE+)QJ
MCFW*R;$?)79#-=R;!(\_DIT`9Z6^4V7M-GZW.["1$C>!K!B1]:ZIYAW-S"HC
M>\Q)1Z*,M+R8?D#^RJ<W!>*%FU8`L2ZL^Y`L0-,ZXZ7KS4/DN8U@!MR;=YM.
MFY[905$0(4[(#Q.Y2*I\?TM6^)>7^@'\.>U2XVWJ7<VS*10/;'64JP1Z-'P]
M(>LEKNRG1U_L<'4:NZ'A>MH*4KP[<'A,]$3H49)DQ/06U\;6'8AM?FBSCE9O
MQ'OV451:&'Z6/)Y2L">D4K-EMQ!4'7$#Y\3S.)%Z9WWI]0=.'27BM1,F</):
In the mail_logs we have found an =0A ending after the file extension, like this:
grep ".zip=" mail_logs
Wed Jun 24 08:55:16 2020 Info: MID 5759 attachment '202006240855.zip=0A'
The =0A ending is only visible for mails from this one sender so we think this is a a sender side problem but we have never seen like this before.
Do you have any idea why the attachment will not be delivered correctly and why this incident is happening?
Thanks & Regards,
Bence
